:root{--primary:#f5f5f5;--primary-rgb:245, 245, 245;--secondary:#757575;--secondary-rgb:117, 117, 117;--accent:#e0e0e0;--accent-rgb:224, 224, 224;--highlight:#fff;--highlight-rgb:255, 255, 255;--bg-deep:#121212;--bg-card:#1e1e1e;--bg-card-hover:#2c2c2c;--bg-surface:#1e1e1e;--bg-overlay:#121212d9;--grid:#333;--border:#424242;--border-hover:#757575;--success:#4caf50;--success-rgb:76, 175, 80;--warning:#fb8c00;--warning-rgb:251, 140, 0;--danger:#cf6679;--danger-rgb:207, 102, 121;--info:#2196f3;--text-primary:#f5f5f5;--text-secondary:#aaa;--text-muted:#666;--text-accent:#fff;--font-display:"Roboto", "Inter", sans-serif;--font-body:"Roboto", "Inter", sans-serif;--font-mono:"JetBrains Mono", monospace;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:48px;--space-3xl:64px;--radius-sm:4px;--radius-md:4px;--radius-lg:8px;--radius-xl:12px;--radius-full:50%;--shadow-sm:0px 2px 1px -1px #0003, 0px 1px 1px 0px #00000024, 0px 1px 3px 0px #0000001f;--shadow-md:0px 3px 3px -2px #0003, 0px 3px 4px 0px #00000024, 0px 1px 8px 0px #0000001f;--shadow-lg:0px 5px 5px -3px #0003, 0px 8px 10px 1px #00000024, 0px 3px 14px 2px #0000001f;--shadow-glow:0px 7px 8px -4px #0003, 0px 12px 17px 2px #00000024, 0px 5px 22px 4px #0000001f;--shadow-glow-strong:0px 11px 15px -7px #0003, 0px 24px 38px 3px #00000024, 0px 9px 46px 8px #0000001f;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-base:.25s cubic-bezier(.4, 0, .2, 1);--transition-slow:.4s cubic-bezier(.4, 0, .2, 1);--transition-spring:.5s cubic-bezier(.34, 1.56, .64, 1);--z-sidebar:100;--z-header:90;--z-modal:200;--z-toast:9999;--z-loader:400;--sidebar-width:256px;--header-height:64px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);background:var(--bg-deep);color:var(--text-primary);min-height:100vh;line-height:1.6;overflow-x:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-deep)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--primary)}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;line-height:1.2}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}a{color:var(--primary);transition:color var(--transition-fast);text-decoration:none}a:hover{color:var(--accent)}.global-loader{background:var(--bg-deep);z-index:var(--z-loader);opacity:0;pointer-events:none;justify-content:center;align-items:center;transition:opacity .5s;display:flex;position:fixed;inset:0}.global-loader.active{opacity:1;pointer-events:all}.loader-content{text-align:center}.loader-logo-img{filter:drop-shadow(0 0 30px #087c9f80);width:120px;height:auto;animation:2s ease-in-out infinite breathe}.loader-bar{background:var(--border);border-radius:3px;width:200px;height:3px;margin:1.5rem auto;overflow:hidden}.loader-bar-fill{background:linear-gradient(90deg, var(--primary), var(--accent));border-radius:3px;height:100%;animation:2s ease-in-out infinite loadBar}.loader-text{color:var(--text-secondary);font-size:.875rem;font-family:var(--font-mono);animation:2s ease-in-out infinite pulse}.toast-container{z-index:var(--z-toast);flex-direction:column;gap:10px;max-width:400px;display:flex;position:fixed;top:20px;right:20px}.toast{border-radius:var(--radius-md);background:var(--bg-card);border:1px solid var(--border);color:var(--text-primary);animation:slideInRight .4s var(--transition-spring);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);box-shadow:var(--shadow-lg);align-items:center;gap:12px;padding:14px 20px;font-size:.875rem;display:flex}.toast.success{background:#00ff8814;border-color:#00ff884d}.toast.success i{color:var(--success)}.toast.error{background:#ff3b5c14;border-color:#ff3b5c4d}.toast.error i{color:var(--danger)}.toast.warning{background:#ffb80014;border-color:#ffb8004d}.toast.warning i{color:var(--warning)}.toast.info{background:#087c9f14;border-color:#087c9f4d}.toast.info i{color:var(--primary)}.toast-exit{animation:.3s forwards slideOutRight}.btn{border-radius:var(--radius-md);font-family:var(--font-display);cursor:pointer;transition:all var(--transition-base);white-space:nowrap;border:none;justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-size:.9375rem;font-weight:600;text-decoration:none;display:inline-flex;position:relative;overflow:hidden}.btn:before{content:"";background:radial-gradient(circle at var(--ripple-x,50%) var(--ripple-y,50%), #ffffff4d 0%, transparent 70%);opacity:0;transition:transform .5s,opacity .5s;position:absolute;inset:0;transform:scale(0)}.btn:active:before{opacity:1;transition:transform,opacity;transform:scale(2.5)}.btn-primary{background:var(--primary);color:#121212;box-shadow:var(--shadow-sm);text-transform:uppercase;letter-spacing:.05em}.btn-primary:hover{box-shadow:var(--shadow-md);background:#fff;transform:translateY(-1px)}.btn-primary:active{box-shadow:var(--shadow-sm);transform:translateY(0)}.btn-secondary{color:var(--primary);border:1px solid var(--border);text-transform:uppercase;letter-spacing:.05em;background:0 0}.btn-secondary:hover{border-color:var(--primary);background:#ffffff0d}.btn-danger{background:var(--danger);color:#fff;box-shadow:var(--shadow-sm);text-transform:uppercase;letter-spacing:.05em}.btn-danger:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-ghost{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;background:0 0;padding:8px 16px}.btn-ghost:hover{color:var(--text-primary);background:#ffffff0d}.btn-sm{padding:8px 16px;font-size:.8125rem}.btn-lg{padding:16px 32px;font-size:1.0625rem}.btn-block{width:100%}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.btn .spinner{border:2px solid #0000;border-top-color:currentColor;border-radius:50%;width:18px;height:18px;animation:.6s linear infinite spin}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:var(--space-xl);transition:box-shadow var(--transition-base), transform var(--transition-base);box-shadow:var(--shadow-sm);position:relative;overflow:hidden}.card:hover{box-shadow:var(--shadow-md)}.card-glass{background:var(--bg-surface);border:1px solid var(--border);box-shadow:var(--shadow-sm)}.form-group{margin-bottom:var(--space-lg)}.form-label{color:var(--text-secondary);margin-bottom:var(--space-sm);font-size:.875rem;font-weight:500;font-family:var(--font-display);display:block}.form-input,.form-select,.form-textarea{border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);font-family:var(--font-body);transition:all var(--transition-base);background:#2c2c2c;outline:none;padding:12px 16px;font-size:.9375rem}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);background:#333;box-shadow:0 0 0 2px #fff3}.form-input::placeholder{color:var(--text-muted)}.form-input.error{border-color:var(--danger);box-shadow:0 0 0 2px #cf667933}.form-input.success{border-color:var(--success);box-shadow:0 0 0 2px #4caf5033}.form-input:-webkit-autofill{border-color:var(--border);transition:background-color 5000s ease-in-out;-webkit-text-fill-color:var(--text-primary)!important;-webkit-box-shadow:inset 0 0 0 30px #2c2c2c!important}.form-input:-webkit-autofill:hover{border-color:var(--border);transition:background-color 5000s ease-in-out;-webkit-text-fill-color:var(--text-primary)!important;-webkit-box-shadow:inset 0 0 0 30px #2c2c2c!important}.form-input:-webkit-autofill:focus{border-color:var(--border);transition:background-color 5000s ease-in-out;-webkit-text-fill-color:var(--text-primary)!important;-webkit-box-shadow:inset 0 0 0 30px #2c2c2c!important}.form-input:-webkit-autofill:active{border-color:var(--border);transition:background-color 5000s ease-in-out;-webkit-text-fill-color:var(--text-primary)!important;-webkit-box-shadow:inset 0 0 0 30px #2c2c2c!important}.form-input:-webkit-autofill:focus{border-color:var(--primary)}.form-select{appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394A3B8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;padding-right:36px}.form-textarea{resize:vertical;min-height:100px}.form-helper{color:var(--text-muted);margin-top:var(--space-xs);font-size:.75rem}.form-error{color:var(--danger);margin-top:var(--space-xs);align-items:center;gap:4px;font-size:.75rem;display:flex}.badge{font-size:.75rem;font-weight:600;font-family:var(--font-display);border-radius:20px;align-items:center;gap:4px;padding:4px 10px;display:inline-flex}.badge-primary{color:var(--primary);background:#7f8c8d26;border:1px solid #7f8c8d33}.badge-success{color:var(--success);background:#00ff8826;border:1px solid #0f83}.badge-warning{color:var(--warning);background:#ffb80026;border:1px solid #ffb80033}.badge-danger{color:var(--danger);background:#ff3b5c26;border:1px solid #ff3b5c33}.status-line{height:4px;margin-top:var(--space-sm);transition:background var(--transition-slow);border-radius:2px}.status-pending{background:var(--warning);animation:1.5s ease-in-out infinite pulse}.status-approved{background:var(--success)}.status-rejected{background:var(--danger)}.star-rating{gap:4px;display:flex}.star-rating .star{cursor:pointer;color:var(--border);transition:all var(--transition-fast);font-size:1.25rem}.star-rating .star.active,.star-rating .star:hover{color:var(--warning);transform:scale(1.15)}.star-rating .star.active{filter:drop-shadow(0 0 6px #ffb80080)}.modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:var(--z-modal);background:#000000b3;justify-content:center;align-items:center;padding:20px;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.modal-content{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);width:100%;max-width:560px;max-height:85vh;animation:scaleIn .3s var(--transition-spring);box-shadow:var(--shadow-lg), var(--shadow-glow);overflow-y:auto}.modal-header{padding:var(--space-xl);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;display:flex}.modal-header h3{font-family:var(--font-display)}.modal-close{border-radius:var(--radius-sm);width:36px;height:36px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);background:#2c3e500d;border:none;justify-content:center;align-items:center;display:flex}.modal-close:hover{color:var(--danger);background:#ff3b5c26}.modal-body{padding:var(--space-xl)}.modal-footer{padding:var(--space-lg) var(--space-xl);border-top:1px solid var(--border);justify-content:flex-end;gap:12px;display:flex}.table-container{border-radius:var(--radius-lg);border:1px solid var(--border);overflow-x:auto}.data-table{border-collapse:collapse;width:100%}.data-table th{text-align:left;font-family:var(--font-display);color:var(--text-secondary);background:var(--bg-surface);text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--border);padding:14px 16px;font-size:.8125rem;font-weight:600}.data-table td{transition:background var(--transition-fast);border-bottom:1px solid #7f8c8d1a;padding:12px 16px;font-size:.875rem}.data-table tr:hover td{background:#087c9f08}.tabs{border-bottom:1px solid var(--border);margin-bottom:var(--space-xl);gap:0;display:flex}.tab-btn{color:var(--text-secondary);font-family:var(--font-display);cursor:pointer;transition:color var(--transition-fast);background:0 0;border:none;padding:12px 24px;font-weight:500;position:relative}.tab-btn:hover{color:var(--text-primary)}.tab-btn.active{color:var(--primary)}.tab-btn.active:after{content:"";background:var(--primary);border-radius:2px 2px 0 0;height:2px;position:absolute;bottom:-1px;left:0;right:0}.points-display{font-family:var(--font-mono);color:var(--primary);background:linear-gradient(135deg,#7f8c8d1a,#00b8d41a);border:1px solid #7f8c8d33;border-radius:20px;align-items:center;gap:6px;padding:6px 14px;font-size:.875rem;font-weight:600;display:inline-flex}.points-display i{color:var(--warning)}.avatar{border-radius:var(--radius-full);object-fit:cover;border:2px solid var(--border);width:40px;height:40px}.avatar-lg{width:80px;height:80px}.avatar-xl{width:120px;height:120px}.avatar-placeholder{background:linear-gradient(135deg, var(--primary), var(--accent));color:#000;font-family:var(--font-display);justify-content:center;align-items:center;font-size:1rem;font-weight:700;display:flex}.avatar-lg.avatar-placeholder{font-size:1.75rem}.avatar-xl.avatar-placeholder{font-size:2.5rem}.empty-state{text-align:center;padding:var(--space-3xl) var(--space-xl);color:var(--text-secondary)}.empty-state i{margin-bottom:var(--space-lg);color:var(--border);font-size:3rem}.empty-state h4{margin-bottom:var(--space-sm);color:var(--text-primary)}.skeleton{background:linear-gradient(90deg, var(--border) 25%, #7f8c8d33 50%, var(--border) 75%);border-radius:var(--radius-sm);background-size:200% 100%;animation:1.5s infinite shimmer}.skeleton-text{height:16px;margin-bottom:8px}.skeleton-text:last-child{width:60%}.skeleton-avatar{border-radius:50%;width:40px;height:40px}.skeleton-card{border-radius:var(--radius-lg);height:120px}.password-strength{margin-top:var(--space-sm);gap:4px;display:flex}.password-strength .bar{background:var(--border);height:4px;transition:background var(--transition-base);border-radius:2px;flex:1}.password-strength[data-strength="1"] .bar:first-child{background:var(--danger)}.password-strength[data-strength="2"] .bar:nth-child(-n+2){background:var(--warning)}.password-strength[data-strength="3"] .bar:nth-child(-n+3){background:var(--highlight)}.password-strength[data-strength="4"] .bar{background:var(--success)}.app-layout{min-height:100vh;display:flex}.main-content{margin-left:var(--sidebar-width);min-height:100vh;transition:margin-left var(--transition-base);flex:1}.main-content.collapsed{margin-left:0}.page-container{padding:calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl);max-width:1400px;margin:0 auto}.grid-2{gap:var(--space-lg);grid-template-columns:repeat(2,1fr);display:grid}.grid-3{gap:var(--space-lg);grid-template-columns:repeat(3,1fr);display:grid}.grid-4{gap:var(--space-lg);grid-template-columns:repeat(4,1fr);display:grid}.wizard-steps{margin-bottom:var(--space-2xl);align-items:center;gap:0;display:flex}.wizard-step{flex:1;align-items:center;gap:10px;display:flex;position:relative}.wizard-step:not(:last-child):after{content:"";background:var(--border);height:2px;transition:background var(--transition-base);flex:1;margin:0 12px}.wizard-step.completed:not(:last-child):after{background:var(--primary)}.wizard-step .step-number{width:36px;height:36px;font-family:var(--font-display);border:2px solid var(--border);color:var(--text-muted);background:var(--bg-card);transition:all var(--transition-base);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:.875rem;font-weight:700;display:flex}.wizard-step.active .step-number{border-color:var(--primary);color:var(--primary);box-shadow:0 0 15px #087c9f4d}.wizard-step.completed .step-number{border-color:var(--success);background:var(--success);color:#000}.wizard-step .step-label{color:var(--text-muted);white-space:nowrap;font-size:.8125rem;font-weight:500}.wizard-step.active .step-label{color:var(--primary)}.wizard-step.completed .step-label{color:var(--success)}.logo-3d-spin{transform-style:preserve-3d;animation:6s linear infinite spin3d}@keyframes spin3d{0%{transform:rotateY(0)}to{transform:rotateY(360deg)}}@media (width<=1024px){.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}}@media (width<=768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.main-content{margin-left:0!important}.page-container{padding:calc(var(--header-height) + var(--space-md)) var(--space-md) var(--space-md)}h1{font-size:1.75rem}h2{font-size:1.5rem}.wizard-step .step-label{display:none}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}@keyframes slideInRight{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes slideOutRight{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(100%)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-100%)}to{opacity:1;transform:translate(0)}}@keyframes slideInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes breathe{0%,to{filter:drop-shadow(0 0 30px #087c9f80);transform:scale(1)}50%{filter:drop-shadow(0 0 50px #087c9fcc);transform:scale(1.05)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes loadBar{0%{width:0%}50%{width:70%}to{width:100%}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes glow{0%,to{box-shadow:0 0 20px #7f8c8d33}50%{box-shadow:0 0 40px #087c9f66}}@keyframes borderGlow{0%,to{border-color:#7f8c8d33}50%{border-color:#087c9f80}}@keyframes countUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes particleFloat{0%{opacity:0;transform:translateY(0)translate(0)}10%{opacity:1}90%{opacity:1}to{opacity:0;transform:translateY(-100vh)translate(50px)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInScale{0%{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}@keyframes slideReveal{0%{opacity:0;transform:translate(-12px)}to{opacity:1;transform:translate(0)}}@keyframes hoverLift{0%{box-shadow:var(--shadow-sm);transform:translateY(0)}to{box-shadow:var(--shadow-lg);transform:translateY(-4px)}}@keyframes subtleBounce{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@keyframes borderPulse{0%,to{border-color:var(--border)}50%{border-color:#f5f5f566}}.card{transition:box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base)}.card:hover{box-shadow:var(--shadow-md);border-color:var(--border-hover);transform:translateY(-2px)}.page-container{animation:.4s ease-out fadeInUp}.stat-card{transition:all var(--transition-base)}.stat-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.stat-card:hover .stat-icon{transition:transform var(--transition-base);transform:scale(1.1)}.stat-icon{transition:transform var(--transition-base)}.resource-card{transition:all var(--transition-base)}.resource-card:hover{box-shadow:var(--shadow-lg);border-color:var(--border-hover);transform:translateY(-4px)}.resource-header{align-items:flex-start;gap:var(--space-md);display:flex}.teacher-card{transition:all var(--transition-base)}.teacher-card:hover{box-shadow:var(--shadow-lg);border-color:var(--border-hover);transform:translateY(-6px)}.teacher-card-header{align-items:center;gap:var(--space-md);margin-bottom:var(--space-md);display:flex}.teacher-rating{color:var(--text-secondary);align-items:center;gap:6px;font-size:.8125rem;display:flex}.star-display{color:var(--warning);letter-spacing:1px;font-size:.875rem}.login-history-stats .card{transition:all var(--transition-base)}.login-history-stats .card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.lh-row{transition:background var(--transition-fast)}.lh-row:hover td{background:#f5f5f508}.lh-expand-btn i{transition:transform var(--transition-base)}.skeleton-fade-out{animation:.2s forwards fadeOut}.skeleton-avatar{border-radius:50%;animation:1.5s ease-in-out infinite shimmer}.sidebar-overlay{z-index:calc(var(--z-sidebar) - 1);opacity:0;transition:opacity var(--transition-base);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0009;display:none;position:fixed;inset:0}.sidebar-overlay.active{opacity:1;display:block}@media (width<=768px){.sidebar{z-index:var(--z-sidebar);height:100vh;transition:transform .35s cubic-bezier(.4,0,.2,1);position:fixed;transform:translate(-100%)}.sidebar.mobile-open{transform:translate(0)}}@keyframes blinkCaret{0%,to{border-color:#0000}50%{border-color:var(--primary)}}.typing-cursor{border-right:2px solid var(--primary);animation:.8s step-end infinite blinkCaret}.selection-grid .professor-btn{text-align:center;padding:var(--space-lg);transition:all var(--transition-base);flex-direction:column;align-items:center;gap:6px;display:flex}.selection-grid .professor-btn:hover{box-shadow:var(--shadow-lg);border-color:var(--primary);transform:translateY(-4px)}.selection-grid .professor-btn img{transition:transform var(--transition-base)}.selection-grid .professor-btn:hover img{transform:scale(1.1)}@media (width<=768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.main-content{margin-left:0!important}.page-container{padding:calc(var(--header-height) + var(--space-md)) var(--space-md) var(--space-md)}h1{font-size:1.75rem}h2{font-size:1.5rem}.wizard-step .step-label{display:none}.header-clock{display:none!important}.header-right{gap:var(--space-sm)}.header-points{padding:4px 10px;font-size:.8125rem}.breadcrumb-text{text-overflow:ellipsis;white-space:nowrap;max-width:140px;font-size:.9375rem;overflow:hidden}.teacher-grid{grid-template-columns:1fr!important}.teacher-card-header{text-align:center;flex-direction:column}.resource-grid{grid-template-columns:1fr}.login-history-stats{grid-template-columns:repeat(2,1fr)!important}.data-table th,.data-table td{padding:8px 10px;font-size:.8125rem}.table-container{-webkit-overflow-scrolling:touch}.btn{min-height:44px}.btn-sm{min-height:36px}.sidebar-link{padding:14px var(--space-lg);padding-left:calc(var(--space-lg) + 6px)}.toast-container{max-width:none;left:12px;right:12px}.modal-content{max-width:100%;margin:0 var(--space-sm);max-height:90vh}.modal-overlay{padding:var(--space-sm)}}@media (width<=480px){.page-container{padding:calc(var(--header-height) + var(--space-sm)) var(--space-sm) var(--space-sm)}.login-history-stats{grid-template-columns:1fr!important}.header-points{display:none}h2{font-size:1.25rem}.card{padding:var(--space-lg)}.form-input,.form-select{padding:10px 12px;font-size:.875rem}.btn{padding:10px 16px;font-size:.875rem}.stat-card{padding:var(--space-lg)!important}.stat-value{font-size:1.25rem}.stat-icon{width:40px;height:40px;font-size:1rem}}.login-split-container{background:var(--bg-deep);width:100%;min-height:100vh;display:flex}.login-left{background:linear-gradient(135deg, var(--bg-card) 0%, var(--bg-deep) 100%);padding:var(--space-xl);text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex;position:relative}.login-hero-logo{margin-bottom:var(--space-lg);filter:drop-shadow(0 4px 6px #0000004d)}.login-hero-title{font-family:var(--font-display);letter-spacing:2px;color:var(--text-primary);margin-bottom:var(--space-xs);font-size:2.5rem;font-weight:800}.login-hero-tagline{color:var(--text-secondary);margin-bottom:var(--space-xl);font-size:1.125rem}.hero-features{gap:var(--space-lg);margin-top:var(--space-xl);display:flex}.hero-feature{align-items:center;gap:var(--space-xs);color:var(--text-muted);flex-direction:column;font-size:.875rem;display:flex}.hero-feature i{color:var(--primary);font-size:1.5rem}.login-right{background:var(--bg-surface);padding:var(--space-xl);flex:1;justify-content:center;align-items:center;display:flex}.login-card{z-index:2;width:100%;max-width:440px}.login-header-wrapper{margin-bottom:var(--space-xl);flex-direction:column;display:flex}.login-form-header h2{font-family:var(--font-display);margin-bottom:var(--space-xs);color:var(--text-primary);font-size:1.75rem;font-weight:800}.login-form-subtitle{color:var(--text-secondary);font-size:.9375rem}.login-form-body{margin-top:var(--space-lg)}.login-inline-feedback{margin-top:var(--space-md);padding-top:var(--space-md);border-top:1px solid var(--border)}@media (width<=768px){.login-split-container{flex-direction:column}.login-left,.login-right{min-height:50vh}}.login-tabs{border-bottom:1px solid var(--border);margin-bottom:var(--space-xl);gap:0;display:flex}.login-tab{color:var(--text-secondary);font-family:var(--font-display);cursor:pointer;transition:color var(--transition-fast);background:0 0;border:none;flex:1;padding:12px;font-weight:600;position:relative}.login-tab:hover{color:var(--text-primary)}.login-tab.active{color:var(--primary)}.login-tab.active:after{content:"";background:var(--primary);border-radius:2px 2px 0 0;height:2px;position:absolute;bottom:-1px;left:10%;right:10%}.input-with-icon{align-items:center;display:flex;position:relative}.input-with-icon>i{color:var(--text-muted);z-index:1;font-size:.875rem;position:absolute;left:14px}.input-with-icon .form-input{padding-left:40px}.password-toggle{color:var(--text-muted);cursor:pointer;transition:color var(--transition-fast);background:0 0;border:none;padding:8px;position:absolute;right:8px}.password-toggle:hover{color:var(--primary)}.otp-header{text-align:center;margin-bottom:var(--space-xl)}.otp-icon{color:var(--primary);margin-bottom:var(--space-md);filter:drop-shadow(0 0 20px #7f8c8d80);font-size:3rem}.otp-inputs{justify-content:center;gap:10px;display:flex}.otp-digit{text-align:center;width:45px;height:55px;font-size:1.5rem;font-family:var(--font-mono);background:var(--secondary);border:2px solid var(--border);border-radius:var(--radius-md);color:#fff;transition:all var(--transition-base);outline:none;font-weight:700}.otp-digit:focus{border-color:var(--primary);box-shadow:0 0 0 3px #7f8c8d26}.login-footer{text-align:center;margin-top:var(--space-lg)}.onboarding-page{background:var(--bg-deep);min-height:100vh;padding:var(--space-xl);justify-content:center;align-items:center;display:flex}.onboarding-container{width:100%;max-width:560px}.onboarding-card{border-radius:var(--radius-xl);padding:var(--space-2xl)}.onboarding-header{text-align:center;margin-bottom:var(--space-2xl)}.onboarding-logo{filter:drop-shadow(0 0 30px #7f8c8d80);width:80px}.info-grid{gap:var(--space-md);margin-bottom:var(--space-xl);grid-template-columns:1fr 1fr;display:grid}.info-item{padding:var(--space-md);border-radius:var(--radius-md);text-align:center;background:#7f8c8d0d;border:1px solid #7f8c8d1a}.info-item i{color:var(--primary);margin-bottom:var(--space-xs);font-size:1.25rem;display:block}.info-item .info-label{color:var(--text-muted);font-size:.75rem;display:block}.info-item .info-value{font-weight:700;font-family:var(--font-display);color:var(--text-primary);margin-top:2px;display:block}.password-rules{margin-top:var(--space-md)}.password-rules .rule{color:var(--text-muted);align-items:center;gap:6px;padding:2px 0;font-size:.8125rem;display:flex}.password-rules .rule i{font-size:.625rem}.terms-section{margin-bottom:var(--space-xl)}.checkbox-label{cursor:pointer;color:var(--text-secondary);align-items:center;gap:8px;font-size:.875rem;display:flex}.checkbox-label input[type=checkbox]{accent-color:var(--primary);width:18px;height:18px}.sidebar{width:var(--sidebar-width);background:var(--bg-card);border-right:1px solid var(--border);z-index:var(--z-sidebar);transition:transform var(--transition-base);box-shadow:var(--shadow-sm);flex-direction:column;display:flex;position:fixed;top:0;bottom:0;left:0;overflow:hidden;transform:translate(0)}.sidebar.collapsed{transform:translate(-100%)}.sidebar-header{padding:var(--space-lg);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;display:flex;position:relative;overflow:hidden}.sidebar-logo{z-index:2;align-items:center;gap:12px;display:flex}.sidebar-logo-img{object-fit:contain;filter:drop-shadow(0 0 20px #ffffff4d);width:40px;height:40px}.sidebar-brand{font-family:var(--font-display);color:var(--text-primary);white-space:nowrap;font-size:1.125rem;font-weight:800}.sidebar-toggle{color:#fffc;cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition-fast);background:0 0;border:none;padding:8px}.sidebar-toggle:hover{color:#fff;background:#ffffff1a}.sidebar-toggle i{transition:transform var(--transition-base)}.sidebar-nav{padding:var(--space-md) 0;flex:1;position:relative;overflow-y:auto}.sidebar-menu{list-style:none;position:relative}.sidebar-nav-indicator{background:var(--primary);z-index:5;opacity:0;border-radius:0 4px 4px 0;width:4px;transition:all .4s cubic-bezier(.4,0,.2,1);position:absolute;left:0}.sidebar-link{padding:12px var(--space-lg);padding-left:calc(var(--space-lg) + 6px);color:var(--text-secondary);align-items:center;gap:14px;font-size:.9375rem;font-weight:500;text-decoration:none;transition:all .25s cubic-bezier(.4,0,.2,1);display:flex;position:relative}.sidebar-link:hover{color:var(--text-primary);background:#ffffff0d}.sidebar-link.active{color:var(--primary);background:#ffffff14}.sidebar-link i{text-align:center;flex-shrink:0;width:20px;font-size:1rem;transition:all .25s}.sidebar-link.active i{color:var(--primary)}.sidebar-divider{padding:var(--space-lg) var(--space-lg) var(--space-sm)}.sidebar-divider-text{color:#ffffff80;text-transform:uppercase;letter-spacing:.1em;font-size:.6875rem;font-weight:700}.sidebar-footer{padding:var(--space-md) var(--space-lg);border-top:1px solid var(--border);background:var(--bg-surface)}.sidebar-user{padding:var(--space-sm) 0;align-items:center;gap:12px;display:flex}.sidebar-user-name{font-size:.875rem;font-weight:600;display:block}.sidebar-user-role{color:var(--text-muted);font-size:.75rem;display:block}.sidebar-logout{width:100%;color:var(--text-secondary);cursor:pointer;transition:color var(--transition-fast);background:0 0;border:none;align-items:center;gap:14px;padding:10px 0;font-size:.875rem;display:flex}.sidebar-logout:hover{color:var(--danger)}.top-header{top:0;right:0;left:var(--sidebar-width);height:var(--header-height);background:var(--bg-surface);border-bottom:1px solid var(--border);padding:0 var(--space-xl);z-index:var(--z-header);transition:all var(--transition-base);box-shadow:var(--shadow-sm);justify-content:space-between;align-items:center;display:flex;position:fixed}.collapsed~.main-content .top-header,.main-content.collapsed .top-header{left:0}.header-left{align-items:center;gap:var(--space-md);display:flex}.header-toggle-btn{color:#fff;cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition-fast);background:0 0;border:none;padding:8px;font-size:1.25rem}.header-toggle-btn:hover{color:#fff;background:#ffffff1a}.breadcrumb-text{font-family:var(--font-display);color:#fff;font-size:1.125rem;font-weight:700}.header-right{align-items:center;gap:var(--space-lg);display:flex}.header-clock{color:var(--text-primary);background:var(--bg-card);border-radius:var(--radius-full);border:1px solid var(--border);transition:all var(--transition-fast);align-items:center;gap:8px;padding:6px 14px;font-size:.875rem;display:flex}.clock-time{font-family:var(--font-mono);color:var(--text-primary);font-weight:500}.header-notification-btn{background:var(--bg-card);border:1px solid var(--border);color:var(--text-primary);cursor:pointer;border-radius:var(--radius-full);transition:all var(--transition-fast);justify-content:center;align-items:center;width:40px;height:40px;padding:8px;font-size:1.125rem;display:flex;position:relative}.header-notification-btn:hover{border-color:var(--primary);background:#ffffff1a}.header-points{background:var(--bg-card);border-radius:var(--radius-full);border:1px solid var(--border);color:#f1c40f;transition:all var(--transition-fast);align-items:center;gap:8px;padding:6px 14px;font-size:.95rem;font-weight:700;display:flex}.header-points i{color:#f1c40f;filter:drop-shadow(0 0 5px #f1c40f66)}.header-points span{color:#f1c40f}.notification-dot{background:var(--danger);border-radius:50%;width:8px;height:8px;animation:1.5s ease-in-out infinite pulse;position:absolute;top:6px;right:6px}.notification-panel{top:calc(var(--header-height) + 12px);background:var(--bg-card);width:380px;max-height:500px;color:var(--text-primary);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:var(--z-modal);animation:.3s slideInRight;position:fixed;right:20px;overflow:hidden}.header-profile{cursor:pointer;transition:all var(--transition-fast);border-radius:50%;justify-content:center;align-items:center;padding:4px;display:flex;position:relative}.header-profile:hover{background:#ffffff1a}.header-avatar{object-fit:cover;border:2px solid #0009;border-radius:50%;width:40px;height:40px;box-shadow:0 0 10px #0000000d}.header-avatar-placeholder{background:var(--primary);color:var(--bg-deep);justify-content:center;align-items:center;font-size:1.2rem;font-weight:700;display:flex}.profile-dropdown{top:calc(var(--header-height) + 12px);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);width:240px;box-shadow:var(--shadow-md);z-index:var(--z-modal);padding:var(--space-sm) 0;animation:.2s slideInRight;position:fixed;right:20px}.dropdown-header{padding:var(--space-md) var(--space-lg);flex-direction:column;display:flex}.dropdown-name{color:var(--text-primary);font-family:var(--font-display);font-size:1rem;font-weight:700}.dropdown-role{color:var(--text-secondary);font-size:.85rem}.dropdown-divider{background:var(--border);height:1px;margin:var(--space-sm) 0}.dropdown-item{padding:12px var(--space-lg);color:var(--text-primary);transition:all var(--transition-fast);text-align:left;cursor:pointer;background:0 0;border:none;align-items:center;gap:12px;width:100%;font-size:.9375rem;text-decoration:none;display:flex}.dropdown-item:hover{background:var(--bg-surface);color:var(--primary)}.dropdown-item i{text-align:center;opacity:.7;width:18px}.dropdown-item.text-danger{color:var(--danger);font-weight:600}.dropdown-item.text-danger:hover{background:rgba(var(--danger-rgb), .05);color:var(--danger)}.notification-panel-header{padding:var(--space-lg);border-bottom:1px solid var(--border);color:var(--text-primary);justify-content:space-between;align-items:center;display:flex}.notification-panel-header h4{color:var(--text-primary)}.notification-panel-header .modal-close{color:var(--text-secondary)}.notification-list{max-height:400px;overflow-y:auto}.notification-item{padding:var(--space-md) var(--space-lg);transition:background var(--transition-fast);border-bottom:1px solid #ffffff0d;gap:12px;display:flex}.notification-item:hover{background:#ffffff0d}.notification-icon{width:36px;height:36px;color:var(--text-secondary);background:#ffffff0d;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.notification-item.reply .notification-icon{color:var(--success);background:#00ff881a}.notification-content strong{color:var(--text-primary);font-size:.875rem;display:block}.notification-content p{color:var(--text-secondary);margin-top:2px;font-size:.8125rem}.notification-time{color:var(--text-muted);margin-top:4px;font-size:.75rem;display:block}.notification-list .empty-state,.notification-list .empty-state p,.notification-list .empty-state i{color:var(--text-muted)}.dashboard-welcome{padding:var(--space-2xl);background:linear-gradient(135deg, #7f8c8d0d, var(--border-hover));border-radius:var(--radius-xl);margin-bottom:var(--space-xl);border:1px solid #7f8c8d1a}.welcome-left{align-items:center;gap:var(--space-xl);display:flex}.avatar-upload-wrapper{position:relative}.avatar-upload-btn{background:var(--primary);color:#000;cursor:pointer;border:2px solid var(--bg-deep);width:32px;height:32px;transition:transform var(--transition-fast);border-radius:50%;justify-content:center;align-items:center;font-size:.75rem;display:flex;position:absolute;bottom:0;right:0}.avatar-upload-btn:hover{transform:scale(1.1)}.welcome-info h1{margin-bottom:var(--space-sm);font-size:1.75rem}.welcome-meta{gap:var(--space-lg);color:var(--text-secondary);flex-wrap:wrap;font-size:.875rem;display:flex}.welcome-meta span{align-items:center;gap:6px;display:flex}.welcome-meta i{color:var(--primary)}.stat-card{align-items:center;gap:var(--space-lg);display:flex;padding:var(--space-xl)!important}.stat-icon{border-radius:var(--radius-lg);flex-shrink:0;justify-content:center;align-items:center;width:52px;height:52px;font-size:1.25rem;display:flex}.stat-value{font-family:var(--font-display);font-size:1.5rem;font-weight:800;display:block}.stat-label{color:var(--text-secondary);font-size:.8125rem;display:block}.audit-timeline{position:relative}.audit-item{padding:var(--space-md) 0;align-items:flex-start;gap:14px;display:flex;position:relative}.audit-dot{border-radius:50%;flex-shrink:0;width:10px;height:10px;margin-top:4px}.audit-line{opacity:.3;width:2px;position:absolute;top:20px;bottom:-8px;left:4px}.audit-item:last-child .audit-line{display:none}.audit-title{align-items:center;gap:8px;font-size:.875rem;display:flex}.audit-time{color:var(--text-muted);font-size:.75rem}.upload-page-header{margin-bottom:var(--space-xl);justify-content:space-between;align-items:center;gap:var(--space-md);flex-wrap:wrap;display:flex}.upload-page-title{align-items:center;gap:var(--space-lg);display:flex}.upload-title-icon{background:var(--bg-card);border:2px solid var(--border);border-radius:var(--radius-lg);width:56px;height:56px;color:var(--text-primary);box-shadow:var(--shadow-md);flex-shrink:0;justify-content:center;align-items:center;font-size:1.4rem;display:flex;position:relative}.upload-title-icon-ring{border-radius:calc(var(--radius-lg) + 4px);border:2px solid var(--border);opacity:.5;position:absolute;inset:-4px}.upload-page-title h2{margin-bottom:2px}.upload-subtitle{color:var(--text-secondary);font-size:.875rem}.upload-points-hint{border-radius:var(--radius-full);color:var(--text-secondary);white-space:nowrap;background:linear-gradient(135deg,#f39c1214,#f1c40f14);border:1px solid #f39c1233;align-items:center;gap:8px;padding:8px 16px;font-size:.8125rem;display:flex}.upload-points-hint i{color:#f39c12;font-size:1rem}.upload-points-hint strong{color:#f39c12;font-weight:700}.step-header{align-items:center;gap:var(--space-md);margin-bottom:var(--space-xl);display:flex}.step-header-icon{background:var(--border);border-radius:var(--radius-md);width:44px;height:44px;color:var(--primary);flex-shrink:0;justify-content:center;align-items:center;font-size:1.125rem;display:flex}.step-header h3{margin-bottom:2px}.step-back-btn{margin-bottom:var(--space-lg)}.upload-wizard-card{padding:var(--space-2xl)!important}.semester-grid,.selection-grid,.type-grid{gap:var(--space-md);grid-template-columns:repeat(4,1fr);display:grid}.type-grid{grid-template-columns:repeat(3,1fr)}.selection-btn{padding:var(--space-xl);background:var(--bg-card);border:2px solid var(--border);border-radius:var(--radius-lg);color:var(--text-primary);cursor:pointer;transition:all var(--transition-base);font-family:var(--font-display);flex-direction:column;justify-content:center;align-items:center;gap:6px;display:flex}.selection-btn:hover{border-color:var(--primary);background:var(--bg-card-hover);box-shadow:var(--shadow-sm);transform:translateY(-2px)}.selection-btn:hover .selection-number{color:var(--primary);transform:scale(1.1)}.selection-number{color:var(--primary);transition:transform var(--transition-fast);margin-bottom:4px;font-size:2rem;font-weight:800}.selection-code{font-family:var(--font-display);color:var(--text-primary);font-size:1rem;font-weight:700}.selection-sub{color:var(--text-muted);font-size:.75rem}.selection-btn.active{background:var(--primary);border-color:var(--primary);color:var(--bg-deep);box-shadow:var(--shadow-md);transform:scale(1.02)}.selection-btn.active .selection-number,.selection-btn.active .selection-code,.selection-btn.active .selection-sub{color:var(--bg-deep)!important}.type-btn i{color:var(--primary);transition:transform var(--transition-fast);font-size:1.5rem}.type-btn:hover i{transform:scale(1.15)}.upload-dropzone{padding:var(--space-3xl) var(--space-xl);border:2px dashed var(--border);border-radius:var(--radius-xl);cursor:pointer;text-align:center;background:linear-gradient(135deg, var(--border), var(--border-hover));flex-direction:column;justify-content:center;align-items:center;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden}.upload-dropzone:hover,.upload-dropzone.drag-over{border-color:var(--primary);background:var(--bg-card-hover)}.upload-dropzone.drag-over{border-style:solid;transform:scale(1.01)}.dropzone-illustration{width:80px;height:80px;margin-bottom:var(--space-lg);position:relative}.dropzone-circle{background:var(--bg-card);border:1px solid var(--border);z-index:2;width:80px;height:80px;transition:all var(--transition-base);border-radius:50%;justify-content:center;align-items:center;display:flex;position:relative}.upload-dropzone:hover .dropzone-circle{box-shadow:var(--shadow-sm);background:var(--bg-card-hover);transform:scale(1.05)}.dropzone-circle i{color:var(--primary);transition:transform var(--transition-base);font-size:2rem}.upload-dropzone:hover .dropzone-circle i{transform:translateY(-3px)}.dropzone-particles{z-index:1;position:absolute;inset:-10px}.dropzone-particles span{background:var(--primary);opacity:0;border-radius:50%;width:6px;height:6px;position:absolute}.upload-dropzone:hover .dropzone-particles span{animation:2s ease-in-out infinite floatParticle}.dropzone-particles span:first-child{animation-delay:0s;top:20%;left:10%}.dropzone-particles span:nth-child(2){animation-delay:.3s;top:10%;right:15%}.dropzone-particles span:nth-child(3){animation-delay:.6s;bottom:15%;left:20%}.dropzone-particles span:nth-child(4){animation-delay:.9s;bottom:20%;right:10%}.dropzone-particles span:nth-child(5){animation-delay:1.2s;top:5%;left:50%}@keyframes floatParticle{0%,to{opacity:0;transform:translateY(0)scale(.6)}50%{opacity:.6;transform:translateY(-15px)scale(1)}}.dropzone-title{font-family:var(--font-display);color:var(--text-primary);margin-bottom:4px;font-size:1.125rem;font-weight:700}.dropzone-sub{color:var(--text-secondary);margin-bottom:var(--space-lg);font-size:.875rem}.dropzone-browse{color:var(--primary);text-decoration:underline;-webkit-text-decoration-color:var(--border);text-decoration-color:var(--border);text-underline-offset:3px;transition:text-decoration-color var(--transition-fast);font-weight:600}.upload-dropzone:hover .dropzone-browse{-webkit-text-decoration-color:var(--primary);text-decoration-color:var(--primary)}.dropzone-constraints{gap:var(--space-md);color:var(--text-muted);flex-wrap:wrap;justify-content:center;font-size:.75rem;display:flex}.dropzone-constraints span{align-items:center;gap:4px;display:flex}.dropzone-constraints .fa-check-circle{color:var(--success)}.dropzone-constraints .fa-ban{color:var(--danger)}.dropzone-constraints .fa-weight-hanging{color:var(--warning)}.upload-file-preview{padding:var(--space-md) var(--space-lg);background:linear-gradient(135deg, var(--border), var(--border-hover));border:1px solid var(--border);border-radius:var(--radius-lg);margin-top:var(--space-md);justify-content:space-between;align-items:center;display:flex}.file-preview-info{align-items:center;gap:var(--space-md);min-width:0;display:flex}.file-preview-icon{background:var(--border);border-radius:var(--radius-md);width:42px;height:42px;color:var(--primary);flex-shrink:0;justify-content:center;align-items:center;font-size:1.125rem;display:flex}.file-preview-details{flex-direction:column;min-width:0;display:flex}.file-preview-name{color:var(--text-primary);text-overflow:ellipsis;white-space:nowrap;font-size:.9rem;font-weight:600;overflow:hidden}.file-preview-size{color:var(--text-secondary);margin-top:2px;font-size:.75rem;font-weight:500}.upload-progress{margin-top:var(--space-lg);padding:var(--space-lg);background:var(--border);border:1px solid var(--border);border-radius:var(--radius-lg)}.upload-progress-info{margin-bottom:var(--space-sm);justify-content:space-between;align-items:center;display:flex}#upload-progress-label{color:var(--text-primary);font-size:.875rem;font-weight:600}#upload-progress-percent{color:var(--primary);font-size:.875rem;font-weight:700;font-family:var(--font-mono)}.upload-progress-track{background:var(--border);border-radius:var(--radius-full);width:100%;height:8px;position:relative;overflow:hidden}.upload-progress-bar{background:linear-gradient(90deg, var(--primary), var(--accent));border-radius:var(--radius-full);width:0%;height:100%;transition:width .4s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.upload-progress-bar:after{content:"";background:linear-gradient(90deg,#0000 0%,#ffffff59 50%,#0000 100%);animation:1.5s infinite progressShimmer;position:absolute;inset:0}@keyframes progressShimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.upload-progress-bar-success{background:linear-gradient(90deg,#10b981,#34d399)!important}.upload-progress-bar-success:after{animation:none}.upload-progress-status{color:var(--text-muted);margin-top:var(--space-sm);font-size:.75rem}.recent-uploads-header{margin-bottom:var(--space-lg);justify-content:space-between;align-items:center;display:flex}.recent-uploads-header h3{align-items:center;gap:var(--space-sm);display:flex}.recent-uploads-count{color:var(--text-muted);background:var(--border);border-radius:var(--radius-full);padding:4px 12px;font-size:.8125rem}.recent-uploads-grid{gap:var(--space-sm);flex-direction:column;display:flex}.recent-upload-card{align-items:center;gap:var(--space-md);padding:var(--space-md) var(--space-lg);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all var(--transition-base);display:flex}.recent-upload-card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-sm);transform:translate(4px)}.recent-upload-icon{background:var(--border);border-radius:var(--radius-md);width:40px;height:40px;color:var(--primary);flex-shrink:0;justify-content:center;align-items:center;font-size:1rem;display:flex}.recent-upload-info{flex-direction:column;flex:1;min-width:0;display:flex}.recent-upload-title{color:var(--text-primary);text-overflow:ellipsis;white-space:nowrap;font-size:.9rem;font-weight:600;overflow:hidden}.recent-upload-meta{color:var(--text-muted);margin-top:2px;font-size:.75rem}.recent-upload-status{flex-direction:column;flex-shrink:0;align-items:flex-end;gap:4px;display:flex}.recent-upload-points{color:#f39c12;font-size:.75rem;font-weight:700;font-family:var(--font-mono)}.file-drop-zone{padding:var(--space-3xl);border:2px dashed var(--border);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-base);text-align:center;color:var(--text-secondary);flex-direction:column;justify-content:center;align-items:center;display:flex}.file-drop-zone:hover,.file-drop-zone.drag-over{border-color:var(--primary);background:#7f8c8d0d}.file-drop-zone i{color:var(--primary);margin-bottom:var(--space-md);font-size:2.5rem}.file-preview{align-items:center;gap:var(--space-md);padding:var(--space-md) var(--space-lg);border-radius:var(--radius-md);background:#7f8c8d0d;border:1px solid #7f8c8d33;display:flex}.file-preview i{color:var(--primary);font-size:1.25rem}.file-preview #file-size{color:var(--text-muted);font-size:.8125rem}.resource-grid{gap:var(--space-md);grid-template-columns:repeat(auto-fill,minmax(340px,1fr));display:grid}.resource-card{padding:var(--space-lg)!important}.resource-header{gap:var(--space-md);align-items:flex-start;display:flex}.resource-type-icon{border-radius:var(--radius-md);width:44px;height:44px;color:var(--primary);background:#7f8c8d1a;flex-shrink:0;justify-content:center;align-items:center;font-size:1.125rem;display:flex}.teacher-card-header{gap:var(--space-lg);margin-bottom:var(--space-lg);align-items:center;display:flex}.teacher-card-footer{padding-top:var(--space-md);border-top:1px solid var(--border);justify-content:space-between;align-items:center;display:flex}.teacher-rating{color:var(--warning)}.star-display{letter-spacing:2px;font-size:1rem}.idea-rating-display{border-radius:var(--radius-full);background:#ffffff0d;align-items:center;gap:8px;width:fit-content;margin-top:8px;padding:6px 12px;display:flex}.idea-rating-display .stars{color:var(--warning);letter-spacing:2px;font-size:.9rem}.idea-rating-display .avg{color:var(--text-primary);font-size:.85rem;font-weight:700}.idea-rating-display .count{color:var(--text-muted);font-size:.75rem}.star-rating-widget{flex-direction:row-reverse;justify-content:flex-end;gap:4px;display:flex}.star-rating-widget input{display:none}.star-rating-widget label{color:#ccc;cursor:pointer;font-size:1.5rem;transition:color .2s ease-in-out}.star-rating-widget label:hover,.star-rating-widget label:hover~label,.star-rating-widget input:checked~label{color:var(--warning)}.star-rating-widget.disabled label{cursor:default}.star-rating-widget.disabled label:hover,.star-rating-widget.disabled label:hover~label{color:inherit}.admin-uploads-view .upload-status-badge{border-radius:20px;padding:4px 10px;font-size:.75rem;font-weight:600}@media (width<=768px){.login-split{flex-direction:column}.login-left-panel{padding:var(--space-xl) var(--space-md);min-height:auto}.login-hero-title{font-size:2rem}.login-hero-features{gap:var(--space-md)}.login-right-panel{padding:var(--space-xl) var(--space-md)}.login-right-panel:before{display:none}.sidebar{transition:transform var(--transition-base);transform:translate(-100%)}.sidebar.mobile-open{transform:translate(0)}.top-header{left:0!important}.mobile-menu-btn{display:block}.welcome-left{text-align:center;flex-direction:column}.welcome-meta{justify-content:center}.semester-grid,.selection-grid,.type-grid{grid-template-columns:repeat(2,1fr)}.resource-grid{grid-template-columns:1fr}.otp-digit{width:44px;height:52px}.notification-panel{width:calc(100vw - 40px);right:20px}.upload-page-header{flex-direction:column;align-items:flex-start}.upload-points-hint{align-self:flex-start}.upload-wizard-card{padding:var(--space-lg)!important}.upload-dropzone{padding:var(--space-xl) var(--space-md)}.dropzone-constraints{flex-direction:column;align-items:center}.upload-file-preview{align-items:flex-start;gap:var(--space-sm);flex-direction:column}.recent-upload-card{flex-wrap:wrap}.recent-upload-status{width:100%;padding-top:var(--space-sm);border-top:1px solid var(--border);margin-top:var(--space-xs);flex-direction:row;justify-content:space-between;align-items:flex-start}}.qa-page-layout{gap:var(--space-xl);grid-template-columns:1fr 280px;align-items:start;display:grid}@media (width<=900px){.qa-page-layout{grid-template-columns:1fr}.qa-leaderboard-sidebar{order:-1}}.qa-tabs{border-bottom:2px solid var(--border);margin-bottom:var(--space-xl);gap:0;display:flex}.qa-tab-btn{color:var(--text-secondary);font-family:var(--font-display);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-2px;padding:10px 24px;font-size:.9375rem;font-weight:600}.qa-tab-btn:hover{color:var(--text-primary)}.qa-tab-btn.active{color:var(--primary);border-bottom-color:var(--primary)}.qa-search-bar{gap:var(--space-md);margin-bottom:var(--space-lg);align-items:center;display:flex}.qa-search-input-wrap{flex:1;position:relative}.qa-search-input-wrap i{color:var(--text-muted);font-size:.875rem;position:absolute;top:50%;left:14px;transform:translateY(-50%)}.qa-search-input{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);width:100%;color:var(--text-primary);transition:border-color var(--transition-fast);padding:10px 14px 10px 38px;font-size:.9375rem}.qa-search-input:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #00ccff14}.qa-tag-filters{margin-bottom:var(--space-lg);flex-wrap:wrap;gap:8px;display:flex}.tag-pill{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);-webkit-user-select:none;user-select:none;padding:5px 14px;font-size:.8125rem;font-weight:600}.tag-pill:hover{border-color:var(--primary);color:var(--primary)}.tag-pill.active{border-color:var(--primary);color:var(--primary);background:#00ccff1f}.question-card{gap:var(--space-md);padding:var(--space-lg);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:var(--space-md);cursor:pointer;transition:all var(--transition-fast);display:flex}.question-card:hover{border-color:var(--primary);box-shadow:0 0 0 1px #00ccff26, var(--shadow-sm);transform:translateY(-1px)}.q-vote-col{flex-direction:column;flex-shrink:0;align-items:center;gap:4px;min-width:48px;display:flex}.upvote-btn{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-muted);cursor:pointer;transition:all var(--transition-fast);flex-direction:column;align-items:center;gap:3px;min-width:44px;padding:8px 10px;font-size:.75rem;font-weight:700;display:flex}.upvote-btn i{font-size:1rem}.upvote-btn:hover{border-color:var(--primary);color:var(--primary);background:#00ccff14}.upvote-btn.voted{border-color:var(--primary);color:var(--primary);background:#00ccff1f}.q-content{flex:1;min-width:0}.q-title{font-family:var(--font-display);color:var(--text-primary);margin-bottom:6px;font-size:1rem;font-weight:700;line-height:1.4}.q-tags{flex-wrap:wrap;gap:6px;margin-bottom:8px;display:flex}.q-tag-badge{border-radius:var(--radius-sm);color:var(--primary);background:#00ccff14;border:1px solid #0cf3;padding:2px 10px;font-size:.75rem;font-weight:600}.q-meta{color:var(--text-muted);flex-wrap:wrap;align-items:center;gap:14px;margin-top:8px;font-size:.8125rem;display:flex}.q-meta-item{align-items:center;gap:5px;display:flex}.accepted-badge{border-radius:var(--radius-sm);color:#0f8;letter-spacing:.3px;background:#00ff8826;border:1px solid #0f86;align-items:center;gap:5px;padding:3px 12px;font-size:.75rem;font-weight:800;animation:2.5s ease-in-out infinite acceptedPulse;display:inline-flex}@keyframes acceptedPulse{0%,to{box-shadow:0 0 6px #00ff8826}50%{box-shadow:0 0 14px #00ff8859}}.top-answer-badge{border-radius:var(--radius-sm);color:#0f8;background:#00ff8826;border:1px solid #00ff8859;align-items:center;gap:5px;padding:4px 12px;font-size:.75rem;font-weight:700;animation:2s ease-in-out infinite greenPulse;display:inline-flex}@keyframes greenPulse{0%,to{box-shadow:0 0 8px #0f83}50%{box-shadow:0 0 18px #00ff8873}}.answer-block{padding:var(--space-lg);background:var(--bg-surface);border:1px solid var(--border);border-left:3px solid var(--border);border-radius:var(--radius-lg);margin-bottom:var(--space-md)}.answer-block.accepted-answer{border-left:4px solid var(--success);background:#00ff880f;border-color:#00ff8859;position:relative;box-shadow:0 0 16px #00ff8814,inset 0 0 0 1px #00ff881f}.answer-block.accepted-answer:before{content:"✓ Accepted Answer";color:#0f8;letter-spacing:.5px;text-transform:uppercase;border-radius:0 var(--radius-lg) 0 var(--radius-md);background:linear-gradient(135deg,#0f83,#00c86440);border-bottom:1px solid #00ff8840;border-left:1px solid #00ff8840;padding:4px 14px;font-size:.7rem;font-weight:800;position:absolute;top:0;right:0}.answer-body{color:var(--text-secondary);word-break:break-word;white-space:pre-wrap;font-size:.9375rem;line-height:1.7}.answer-actions{align-items:center;gap:var(--space-sm);margin-top:var(--space-md);padding-top:var(--space-sm);border-top:1px solid var(--border);flex-wrap:wrap;display:flex}.reply-thread{margin-top:var(--space-md);padding-left:var(--space-lg);border-left:2px solid var(--border)}.reply-item{gap:var(--space-sm);padding:var(--space-sm) 0;border-bottom:1px solid #ffffff0a;font-size:.875rem;display:flex}.reply-item:last-child{border-bottom:none}.reply-avatar-init{background:var(--primary);width:28px;height:28px;color:var(--bg-deep);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:.75rem;font-weight:700;display:flex}.reply-content{flex:1;min-width:0}.reply-author{color:var(--text-primary);margin-bottom:2px;font-size:.8125rem;font-weight:700}.reply-body{color:var(--text-secondary);word-break:break-word;line-height:1.5}.reply-meta{color:var(--text-muted);margin-top:3px;font-size:.75rem}.reply-input-row{margin-top:var(--space-sm);gap:8px;display:flex}.reply-input-row input{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);transition:border-color var(--transition-fast);flex:1;padding:8px 12px;font-size:.875rem}.reply-input-row input:focus{border-color:var(--primary);outline:none}.qa-leaderboard-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);top:calc(var(--header-height) + 16px);position:sticky;overflow:hidden}.qa-lb-header{padding:var(--space-md) var(--space-lg);border-bottom:1px solid var(--border);font-family:var(--font-display);color:var(--text-primary);align-items:center;gap:8px;font-size:.9375rem;font-weight:700;display:flex}.qa-lb-header i{color:#f1c40f}.lb-row{align-items:center;gap:var(--space-sm);padding:10px var(--space-lg);transition:background var(--transition-fast);border-bottom:1px solid #ffffff0a;display:flex}.lb-row:hover{background:#ffffff08}.lb-row:last-child{border-bottom:none}.lb-rank{width:22px;color:var(--text-muted);text-align:center;flex-shrink:0;font-size:.875rem;font-weight:800}.lb-rank.gold{color:#f1c40f}.lb-rank.silver{color:#bdc3c7}.lb-rank.bronze{color:peru}.lb-avatar{background:var(--primary);width:34px;height:34px;color:var(--bg-deep);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:.875rem;font-weight:800;display:flex}.lb-info{flex:1;min-width:0}.lb-name{color:var(--text-primary);white-space:nowrap;text-overflow:ellipsis;font-size:.875rem;font-weight:600;overflow:hidden}.lb-pts{color:var(--text-muted);font-size:.75rem}.qa-detail-panel{background:var(--bg-surface);border-left:1px solid var(--border);z-index:999;width:min(700px,100vw);height:100vh;box-shadow:var(--shadow-lg);transition:transform .35s cubic-bezier(.4,0,.2,1);position:fixed;top:0;right:0;overflow-y:auto;transform:translate(100%)}.qa-detail-panel.open{transform:translate(0)}.qa-panel-overlay{z-index:998;opacity:0;pointer-events:none;background:#00000080;transition:opacity .3s;position:fixed;inset:0}.qa-panel-overlay.open{opacity:1;pointer-events:all}.qa-panel-header{background:var(--bg-surface);border-bottom:1px solid var(--border);padding:var(--space-lg) var(--space-xl);z-index:2;justify-content:space-between;align-items:center;display:flex;position:sticky;top:0}.qa-panel-body{padding:var(--space-xl)}.assessment-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-lg);margin-bottom:var(--space-md);transition:all var(--transition-fast)}.assessment-card:hover{box-shadow:var(--shadow-sm);border-color:#00ccff4d}.assessment-card-header{justify-content:space-between;align-items:flex-start;gap:var(--space-md);margin-bottom:var(--space-sm);display:flex}.tag-needed{border-radius:var(--radius-sm);color:var(--warning);background:#ffb8001f;border:1px solid #ffb80059;align-items:center;gap:5px;padding:3px 10px;font-size:.75rem;font-weight:700;display:inline-flex}.tag-fulfilled{border-radius:var(--radius-sm);color:var(--success);background:#00ff881f;border:1px solid #00ff884d;align-items:center;gap:5px;padding:3px 10px;font-size:.75rem;font-weight:700;display:inline-flex}.tag-open{border-radius:var(--radius-sm);color:var(--primary);background:#00ccff1a;border:1px solid #00ccff40;align-items:center;gap:5px;padding:3px 10px;font-size:.75rem;font-weight:700;display:inline-flex}.qa-modal-overlay{z-index:9998;padding:var(--space-xl);background:#000000a6;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.qa-modal-box{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-xl);width:100%;max-width:600px;max-height:90vh;padding:var(--space-2xl);box-shadow:var(--shadow-lg);overflow-y:auto}.qa-answer-form{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-lg);margin-top:var(--space-xl)}.answer-block.accepted-answer{animation:3s infinite alternate accepted-glow;position:relative;overflow:hidden;box-shadow:0 0 20px #4caf501a;border:1px solid var(--success)!important;background:#4caf500d!important}.answer-block.accepted-answer:after{content:"? Accepted Answer";background:var(--success);color:#fff;text-transform:uppercase;border-bottom-left-radius:var(--radius-md);z-index:10;padding:4px 12px;font-size:.65rem;font-weight:800;position:absolute;top:0;right:0;box-shadow:-2px 2px 10px #0000004d}.accepted-badge{border-radius:var(--radius-sm);color:var(--success);background:#4caf5026;border:1px solid #4caf504d;align-items:center;gap:4px;padding:2px 8px;font-size:.7rem;font-weight:700;animation:2s infinite badge-pulse;display:inline-flex}@keyframes accepted-glow{0%{box-shadow:0 0 10px #4caf500d}to{box-shadow:0 0 25px #4caf5026}}@keyframes badge-pulse{0%{transform:scale(1);box-shadow:0 0 #4caf5066}70%{transform:scale(1.05);box-shadow:0 0 0 8px #4caf5000}to{transform:scale(1);box-shadow:0 0 #4caf5000}}.vote-bar .vote-btn{border-radius:var(--radius-sm);padding:4px 10px;transition:all .2s}.vote-bar .vote-btn:hover{background:#ffffff0d;transform:scale(1.05)}.comments-section{animation:.3s fadeSlideIn}.comment-item{transition:background .3s}.like-comment-btn:hover{transform:scale(1.15)}.like-comment-btn i{transition:transform .2s}.like-comment-btn:active i{transform:scale(1.3)}.replies-container .reply-item{position:relative}.replies-container .reply-item:before{content:"";background:#ffffff14;width:8px;height:1px;position:absolute;top:12px;left:-12px}#reply-box-comment-input,[id^=reply-box-]{gap:8px;display:flex}.notification-item.unread{border-left:3px solid var(--primary);background:#00ccff0f}.notification-item.clickable:hover{background:#ffffff0a}.your-upload-card{border-left:3px solid #0000}.your-upload-card:hover{border-left-color:var(--primary)}@keyframes fadeSlideIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.room-topbar{border-bottom:1px solid var(--border);background:var(--bg-card);border-radius:var(--radius-md) var(--radius-md) 0 0;flex-shrink:0;justify-content:space-between;align-items:center;padding:12px 20px;display:flex}.room-topbar-left{align-items:center;gap:12px;display:flex}.room-topbar-right{align-items:center;gap:8px;display:flex}.room-body{border-radius:0 0 var(--radius-md) var(--radius-md);background:var(--bg-deep);flex:1;display:flex;overflow:hidden}.room-members-panel{background:var(--bg-card);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;width:240px;display:flex;overflow-y:auto}.room-members-list{flex:1;padding:8px;overflow-y:auto}.room-member-item{border-radius:var(--radius-sm);align-items:center;gap:10px;padding:8px 10px;transition:background .15s;display:flex}.room-member-item:hover{background:#ffffff0a}.room-member-avatar{background:linear-gradient(135deg, var(--primary), var(--accent));color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:.8rem;font-weight:700;display:flex}.room-member-name{color:var(--text-primary);font-size:.85rem;font-weight:500}.room-main{flex-direction:column;flex:1;display:flex;position:relative;overflow:hidden}.room-tabs{border-bottom:1px solid var(--border);background:var(--bg-card);flex-shrink:0;gap:0;display:flex}.room-tab{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;align-items:center;gap:6px;padding:10px 20px;font-size:.85rem;transition:all .2s;display:flex}.room-tab:hover{color:var(--text-primary);background:#ffffff05}.room-tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}.room-tab-content{flex-direction:column;flex:1;display:none;overflow:hidden}.room-tab-content.active{display:flex}.room-chat-messages{flex-direction:column;flex:1;gap:8px;padding:16px;display:flex;overflow-y:auto}.room-chat-input{border-top:1px solid var(--border);background:var(--bg-card);flex-shrink:0;gap:8px;padding:12px 16px;display:flex}.room-chat-input .form-input{flex:1}.room-msg{gap:8px;max-width:75%;animation:.2s fadeSlideIn;display:flex}.room-msg-me{flex-direction:row-reverse;align-self:flex-end}.room-msg-other{align-self:flex-start}.room-msg-avatar{background:linear-gradient(135deg, var(--accent), var(--primary));color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;margin-top:4px;font-size:.7rem;font-weight:700;display:flex}.room-msg-bubble{border-radius:16px;padding:8px 14px;font-size:.875rem;line-height:1.4;position:relative}.room-msg-me .room-msg-bubble{background:var(--primary);color:#121212;border-bottom-right-radius:4px}.room-msg-me .room-msg-time{color:#00000080}.room-msg-other .room-msg-bubble{background:var(--bg-card);border:1px solid var(--border);color:var(--text-primary);border-bottom-left-radius:4px}.room-msg-text{color:inherit}.room-msg-author{color:var(--accent);margin-bottom:2px;font-size:.7rem;font-weight:600}.room-msg-time{opacity:.6;text-align:right;margin-top:4px;font-size:.65rem}.room-msg-system{text-align:center;color:var(--text-muted);background:#ffffff05;border-radius:20px;align-self:center;padding:6px 12px;font-size:.75rem;font-style:italic}.room-video-grid{flex:1;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;padding:16px;display:grid;overflow-y:auto}.room-video-item{border-radius:var(--radius-md);aspect-ratio:16/9;background:#111;position:relative;overflow:hidden}.room-video-item video{object-fit:cover;width:100%;height:100%}.room-video-label{color:#fff;background:#000000b3;border-radius:12px;padding:2px 10px;font-size:.75rem;position:absolute;bottom:8px;left:8px}.room-call-controls{border-bottom:1px solid var(--border);background:var(--bg-card);flex-shrink:0;justify-content:center;gap:10px;padding:16px;display:flex}.room-screen-view,.room-screen-item{background:#000;flex-direction:column;flex:1;display:flex;position:relative;overflow:hidden}.room-screen-item video{object-fit:contain;background:#000;width:100%;height:100%;display:block}.room-screen-overlay{pointer-events:none;opacity:1;z-index:5;flex-direction:column;justify-content:space-between;transition:opacity .4s;display:flex;position:absolute;inset:0}.room-screen-overlay.hidden{opacity:0}.room-screen-overlay .overlay-top{background:linear-gradient(#000000a6 0%,#0000 100%);align-items:center;gap:8px;padding:10px 14px;display:flex}.room-screen-overlay .overlay-bottom{pointer-events:all;background:linear-gradient(#0000 0%,#000000a6 100%);justify-content:flex-end;align-items:center;gap:8px;padding:10px 14px;display:flex}.room-screen-label{color:#fff;text-shadow:0 1px 4px #000c;align-items:center;gap:6px;font-size:.8rem;font-weight:600;display:flex}.room-screen-fs-btn{color:#fff;cursor:pointer;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);pointer-events:all;background:#12121299;border:1px solid #ffffff40;border-radius:4px;align-items:center;gap:6px;padding:5px 12px;font-size:.82rem;transition:background .2s;display:flex}.room-screen-fs-btn:hover{background:#f5f5f533}.room-page-container{flex-direction:column;display:flex;overflow:hidden;max-width:100%!important;height:calc(100vh - var(--header-height,64px))!important;margin:0!important;padding:0!important}.room-page-container .room-body{flex:1 1 0;min-height:0;overflow:hidden}@media (width<=768px){.room-members-panel{z-index:999;box-shadow:var(--shadow-xl);transition:left .3s;position:fixed;top:0;bottom:0;left:-260px}.room-members-panel.open{left:0}.room-msg{max-width:90%}.room-video-grid{grid-template-columns:1fr}}.landing-page{color:#f5f5f5;background:#000;min-height:100vh;font-family:Outfit,Inter,sans-serif;overflow-x:hidden}.landing-nav{z-index:999;background:0 0;justify-content:space-between;align-items:center;padding:20px 44px;transition:background .4s,-webkit-backdrop-filter .4s,backdrop-filter .4s;display:flex;position:fixed;top:0;left:0;right:0}.landing-nav.scrolled{-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);background:#000000d1;border-bottom:1px solid #ffffff0f}.nav-logo-text{letter-spacing:.12em;color:#fff;text-transform:uppercase;font-family:Outfit,sans-serif;font-size:1.05rem;font-weight:800}.nav-actions{align-items:center;gap:10px;display:flex}.nav-btn{cursor:pointer;border:none;border-radius:100px;align-items:center;gap:6px;padding:9px 24px;font-family:Outfit,sans-serif;font-size:.875rem;font-weight:600;transition:all .25s;display:inline-flex;position:relative;overflow:hidden}.nav-btn-outline{color:#fff;background:0 0;border:1.5px solid #ffffffb8}.nav-btn-outline:hover{background:#ffffff1a;border-color:#fff}.nav-btn-solid{color:#000;background:#fff;border:1.5px solid #fff}.nav-btn-solid:hover{background:#e8e8e8;box-shadow:0 6px 24px #ffffff38}.landing-hero{background:#000;align-items:center;width:100%;height:100vh;min-height:620px;display:flex;position:relative;overflow:hidden}.hero-bg-gradient{pointer-events:none;z-index:2;background:radial-gradient(50% 100% at 25%,#0a0a0a00 0%,#000 70%);position:absolute;inset:0}#landing-canvas{z-index:1;pointer-events:none;position:absolute;inset:0}.hero-ab2-wrap{z-index:3;justify-content:center;align-items:center;width:50%;height:100%;display:flex;position:absolute;top:0;right:0;overflow:hidden}.hero-ab2-img,.hero-ab2-img-distorted{object-fit:contain;object-position:right center;width:100%;height:100%;max-height:95vh;animation:7s ease-in-out infinite heroFloat;position:absolute;inset:0}.hero-ab2-img{z-index:2;filter:brightness(.95)drop-shadow(-40px 0 80px #000000e6)}.hero-ab2-img-distorted{z-index:3;filter:url(#distort-filter)brightness(.95);-webkit-mask-image:radial-gradient(circle 180px at var(--mx,-100%) var(--my,-100%), black 0%, transparent 100%);-webkit-mask-image:radial-gradient(circle 180px at var(--mx,-100%) var(--my,-100%), black 0%, transparent 100%);mask-image:radial-gradient(circle 180px at var(--mx,-100%) var(--my,-100%), black 0%, transparent 100%);opacity:0;transition:opacity .3s}.hero-ab2-glow{z-index:1;background:radial-gradient(circle,#50506e33 0%,#0000 70%);border-radius:50%;width:360px;height:360px;animation:4s ease-in-out infinite glowPulse;position:absolute;top:40%;right:15%;transform:translateY(-50%)}@keyframes heroFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-16px)}}@keyframes glowPulse{0%,to{opacity:.5;transform:translateY(-50%)scale(1)}50%{opacity:1;transform:translateY(-50%)scale(1.2)}}.hero-content{z-index:10;flex-direction:column;justify-content:center;max-width:52%;padding:0 72px;display:flex;position:relative}.hero-badge{color:#fff9;letter-spacing:.1em;text-transform:uppercase;background:#ffffff0f;border:1px solid #ffffff24;border-radius:100px;align-items:center;gap:8px;width:fit-content;margin-bottom:22px;padding:6px 16px;font-size:.7rem;font-weight:600;display:inline-flex}.hero-badge-dot{background:#fff;border-radius:50%;width:6px;height:6px;animation:2s ease-in-out infinite dotP}@keyframes dotP{0%,to{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}.hero-title-img{filter:drop-shadow(0 10px 20px #00000080);max-width:100%;height:auto;margin-bottom:0;display:block}.hero-subtitle-block{margin-top:16px}.hero-subtitle{color:#fff;margin:0;font-family:Outfit,sans-serif;font-size:clamp(1.3rem,2.5vw,1.95rem);font-weight:700;line-height:1.22}.hero-tagline{color:#ffffff6b;max-width:370px;margin-top:10px;font-size:.9rem;line-height:1.72}.hero-actions{flex-wrap:wrap;align-items:center;gap:14px;margin-top:30px;display:flex}.hero-btn-primary{color:#000;cursor:pointer;letter-spacing:.01em;background:#fff;border:none;border-radius:100px;align-items:center;gap:8px;padding:13px 32px;font-family:Outfit,sans-serif;font-size:.9375rem;font-weight:700;transition:transform .3s cubic-bezier(.34,1.56,.64,1),box-shadow .3s;display:inline-flex;position:relative;overflow:hidden}.hero-btn-primary:before{content:"";background:radial-gradient(circle at var(--rx,50%) var(--ry,50%), #0000001f 0%, transparent 70%);opacity:0;transition:opacity .3s;position:absolute;inset:0}.hero-btn-primary:hover:before{opacity:1}.hero-btn-primary:hover{transform:translateY(-4px)scale(1.04);box-shadow:0 18px 40px #ffffff47}.hero-btn-primary:active{transform:scale(.97)}.hero-btn-secondary{color:#ffffffd1;cursor:pointer;letter-spacing:.01em;background:0 0;border:1.5px solid #ffffff47;border-radius:100px;align-items:center;gap:8px;padding:12px 28px;font-family:Outfit,sans-serif;font-size:.9375rem;font-weight:600;transition:all .28s;display:inline-flex;position:relative;overflow:hidden}.hero-btn-secondary:hover{color:#fff;background:#ffffff0f;border-color:#ffffffb3;transform:translateY(-2px);box-shadow:0 0 24px #ffffff14}.hero-scroll-hint{color:#ffffff42;letter-spacing:.14em;text-transform:uppercase;z-index:10;align-items:center;gap:10px;font-size:.67rem;display:flex;position:absolute;bottom:26px;left:72px}.scroll-line{background:#fff3;width:34px;height:1px}.section-divider{background:linear-gradient(90deg,#0000,#ffffff12,#0000);width:calc(100% - 144px);height:1px;margin:0 auto}.landing-section{padding:96px 72px}.section-label{letter-spacing:.16em;text-transform:uppercase;color:#ffffff5c;align-items:center;gap:10px;margin-bottom:16px;font-size:.69rem;font-weight:600;display:inline-flex}.section-label:before{content:"";background:#ffffff42;width:22px;height:1px}.section-heading{color:#fff;letter-spacing:-.02em;margin-bottom:12px;font-family:Outfit,sans-serif;font-size:clamp(1.85rem,3.6vw,2.9rem);font-weight:800;line-height:1.1}.section-heading em{color:#ffffff5c;font-style:italic}.section-sub{color:#ffffff61;max-width:480px;margin-bottom:48px;font-size:.93rem;line-height:1.82}.quote-section{text-align:center;flex-direction:column;align-items:center;padding:76px 72px;display:flex}.quote-text{color:#ffffffc2;letter-spacing:-.015em;max-width:760px;min-height:2.7em;font-family:Outfit,sans-serif;font-size:clamp(1.35rem,2.8vw,2.3rem);font-weight:700;line-height:1.35}.typewriter-cursor{vertical-align:middle;background:#ffffff80;width:3px;height:.95em;margin-left:3px;animation:.8s step-end infinite blinkC;display:inline-block}@keyframes blinkC{0%,to{opacity:1}50%{opacity:0}}.quote-author{color:#ffffff38;letter-spacing:.14em;text-transform:uppercase;margin-top:18px;font-size:.73rem}.features-grid{background:#ffffff12;border:1px solid #ffffff12;border-radius:18px;grid-template-columns:repeat(3,1fr);gap:1px;display:grid;overflow:hidden}.feature-item{cursor:default;background:#070707;padding:38px 30px;transition:background .3s;position:relative;overflow:hidden}.feature-item:hover{background:#0d0d0d}.feature-item:after{content:"";border-radius:0;transition:box-shadow .4s;position:absolute;inset:0;box-shadow:inset 0 0 0 1px #0000}.feature-item:hover:after{box-shadow:inset 0 0 0 1px #ffffff2e}.feature-item:before{content:"";background:linear-gradient(90deg,#0000,#ffffff59,#0000);width:100%;height:1px;transition:left .6s;position:absolute;top:0;left:-100%}.feature-item:hover:before{left:100%}.feature-icon{color:#ffffff9e;background:#ffffff0d;border:1px solid #ffffff17;border-radius:10px;justify-content:center;align-items:center;width:44px;height:44px;margin-bottom:18px;font-size:1rem;transition:all .3s;display:flex}.feature-item:hover .feature-icon{background:#ffffff1a;border-color:#fff3;transform:scale(1.1)rotate(-4deg)}.feature-title{color:#fff;margin-bottom:8px;font-size:.98rem;font-weight:700}.feature-desc{color:#ffffff5c;font-size:.835rem;line-height:1.76}.stats-row{background:#ffffff12;border:1px solid #ffffff12;border-radius:14px;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:52px;display:grid;overflow:hidden}.stat-item{text-align:center;background:#070707;padding:30px 22px;transition:background .3s;position:relative;overflow:hidden}.stat-item:hover{background:#0d0d0d}.stat-item:after{content:"";transition:box-shadow .4s;position:absolute;inset:0;box-shadow:inset 0 0 0 1px #0000}.stat-item:hover:after{box-shadow:inset 0 0 0 1px #ffffff29}.stat-value{color:#fff;letter-spacing:-.04em;font-family:Outfit,sans-serif;font-size:2.1rem;font-weight:800;line-height:1}.stat-label{color:#ffffff4d;letter-spacing:.04em;margin-top:6px;font-size:.73rem}.teacher-section{grid-template-columns:1fr 1fr;align-items:center;gap:68px;padding:96px 72px;display:grid}.teacher-rating-preview{background:#ffffff06;border:1px solid #ffffff12;border-radius:18px;padding:26px;transition:border-color .4s,box-shadow .4s;position:relative;overflow:hidden}.teacher-rating-preview:hover{border-color:#ffffff26;box-shadow:0 0 48px #ffffff0a}.teacher-rating-preview:before{content:"";background:linear-gradient(90deg,#0000,#ffffff1f,#0000);height:1px;position:absolute;top:0;left:0;right:0}.teacher-card-preview{border-bottom:1px solid #ffffff0d;border-radius:6px;align-items:center;gap:14px;padding:13px 0;transition:background .2s;display:flex}.teacher-card-preview:last-child{border-bottom:none}.teacher-card-preview:hover{background:#ffffff08;padding-left:6px}.teacher-avatar-preview{color:#ffffff8c;background:#ffffff12;border:1px solid #ffffff1a;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:.78rem;font-weight:700;display:flex}.teacher-info-preview{flex:1}.teacher-name-preview{color:#ffffffd1;font-size:.875rem;font-weight:600}.teacher-dept-preview{color:#ffffff4d;margin-top:2px;font-size:.71rem}.teacher-stars{color:#c9a227;gap:2px;font-size:.72rem;display:flex}.exchange-section{border-top:1px solid #ffffff0d;border-bottom:1px solid #ffffff0d;padding:96px 72px}.exchange-grid{grid-template-columns:repeat(2,1fr);gap:18px;margin-top:48px;display:grid}.exchange-card{cursor:default;background:#ffffff06;border:1px solid #ffffff12;border-radius:14px;padding:30px;transition:transform .35s cubic-bezier(.34,1.56,.64,1),border-color .35s,box-shadow .35s;position:relative;overflow:hidden}.exchange-card:before{content:"";opacity:0;background:radial-gradient(ellipse at var(--mx,50%) var(--my,50%), #ffffff0e 0%, transparent 65%);pointer-events:none;transition:opacity .3s;position:absolute;inset:0}.exchange-card:hover:before{opacity:1}.exchange-card:hover{border-color:#ffffff29;transform:translateY(-5px);box-shadow:0 0 0 1px #ffffff1a,0 24px 48px #00000080}.exchange-card:after{content:"";-webkit-mask-composite:destination-out;opacity:0;background:linear-gradient(135deg,#ffffff2e,#0000,#ffffff1a) border-box;border:1px solid #0000;border-radius:15px;transition:opacity .4s;position:absolute;inset:-1px;-webkit-mask-image:linear-gradient(#fff 0 0),linear-gradient(#fff 0 0);-webkit-mask-position:0 0,0 0;-webkit-mask-size:auto,auto;-webkit-mask-repeat:repeat,repeat;-webkit-mask-clip:padding-box,border-box;-webkit-mask-origin:padding-box,border-box;-webkit-mask-composite:xor;mask-composite:exclude;-webkit-mask-source-type:auto,auto;mask-mode:match-source,match-source}.exchange-card:hover:after{opacity:1}.exchange-card-icon{margin-bottom:16px;font-size:1.5rem;display:block}.exchange-card-title{color:#fff;margin-bottom:10px;font-size:1rem;font-weight:700}.exchange-card-desc{color:#ffffff5c;font-size:.835rem;line-height:1.8}.cta-section{text-align:center;padding:110px 72px}.cta-heading{color:#fff;letter-spacing:-.03em;margin-bottom:16px;font-family:Outfit,sans-serif;font-size:clamp(2rem,4.2vw,3.4rem);font-weight:900;line-height:1.05}.cta-sub{color:#ffffff5c;max-width:440px;margin:0 auto 34px;font-size:.93rem;line-height:1.82}.cta-btn{color:#000;cursor:pointer;letter-spacing:.01em;background:#fff;border:none;border-radius:100px;align-items:center;gap:10px;padding:14px 40px;font-family:Outfit,sans-serif;font-size:.975rem;font-weight:700;transition:transform .32s cubic-bezier(.34,1.56,.64,1),box-shadow .32s;display:inline-flex;position:relative;overflow:hidden}.cta-btn:hover{transform:translateY(-5px)scale(1.05);box-shadow:0 22px 50px #ffffff38}.cta-btn:before{content:"";background:radial-gradient(circle at var(--rx,50%) var(--ry,50%),#0000001a 0%,transparent 65%);opacity:0;transition:opacity .3s;position:absolute;inset:0}.cta-btn:hover:before{opacity:1}.landing-footer{color:#fff3;border-top:1px solid #ffffff0f;justify-content:space-between;align-items:center;padding:26px 72px;font-size:.77rem;display:flex}.footer-links{align-items:center;gap:18px;display:flex}.footer-links a{color:#fff3;font-size:.77rem;text-decoration:none;transition:color .2s}.footer-links a:hover{color:#ffffff8c}.reveal{opacity:0;transition:opacity .72s,transform .72s cubic-bezier(.34,1.56,.64,1);transform:translateY(26px)}.reveal.visible{opacity:1;transform:translateY(0)}.reveal-delay-1{transition-delay:.1s}.reveal-delay-2{transition-delay:.2s}.reveal-delay-3{transition-delay:.32s}.reveal-delay-4{transition-delay:.44s}.landing-skeleton{background:linear-gradient(90deg,#ffffff0a 25%,#ffffff14 50%,#ffffff0a 75%) 0 0/200% 100%;border-radius:8px;animation:1.5s infinite shimmer}@media (width<=1100px){.hero-content{max-width:56%;padding:0 40px}.hero-ab2-wrap{width:50%}.features-grid,.stats-row{grid-template-columns:repeat(2,1fr)}.teacher-section{grid-template-columns:1fr;gap:40px;padding:72px 40px}.exchange-grid{grid-template-columns:1fr}.landing-section,.exchange-section,.cta-section{padding:72px 40px}.landing-footer{padding:22px 40px}}@media (width<=768px){.landing-nav{padding:16px 22px}.hero-content{max-width:100%;padding:0 22px}.hero-ab2-wrap{display:none}.landing-section,.exchange-section,.cta-section,.teacher-section{padding:60px 22px}.quote-section{padding:56px 22px}.landing-footer{text-align:center;flex-direction:column;gap:12px;padding:20px 22px}.section-divider{width:calc(100% - 44px)}.features-grid{grid-template-columns:1fr}.stats-row{grid-template-columns:repeat(2,1fr)}.exchange-grid{grid-template-columns:1fr}}