:root{--primary: #8b5cf6;--primary-glow: rgba(139, 92, 246, .6);--primary-glow-soft: rgba(139, 92, 246, .15);--secondary: #db2777;--secondary-glow: rgba(236, 72, 153, .6);--accent: #06b6d4;--accent-glow: rgba(6, 182, 212, .6);--mesh-1: rgba(139, 92, 246, .15);--mesh-2: rgba(236, 72, 153, .15);--mesh-3: rgba(6, 182, 212, .15);--mesh-4: rgba(16, 185, 129, .1);--background: #030712;--surface: #111827;--bg-card: rgba(17, 24, 39, .7);--bg-secondary: rgba(31, 41, 55, .7);--text-primary: #f9fafb;--text-secondary: #cbd5e1;--text-muted: #64748b;--success: #10b981;--success-glow: rgba(16, 185, 129, .6);--warning: #f59e0b;--danger: #ef4444;--border: rgba(255, 255, 255, .1);--glass-bg: rgba(17, 24, 39, .65);--glass-border: rgba(255, 255, 255, .08);--glass-shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06), inset 0 1px 0 rgba(255, 255, 255, .05);--radius-sm: 12px;--radius-md: 16px;--radius-lg: 24px;--radius-xl: 32px;--font: "Cairo", sans-serif}[data-theme=light]{--primary: #4f46e5;--primary-glow: rgba(99, 102, 241, .15);--primary-glow-soft: rgba(99, 102, 241, .1);--secondary: #db2777;--secondary-glow: rgba(236, 72, 153, .15);--accent: #0284c7;--accent-glow: rgba(14, 165, 233, .15);--background: #f1f5f9;--surface: #ffffff;--bg-card: rgba(255, 255, 255, 1);--bg-secondary: rgba(241, 245, 249, 1);--bg-panel: #ffffff;--text-primary: #020617;--text-secondary: #1e293b;--text-muted: #64748b;--success: #10b981;--success-glow: rgba(16, 185, 129, .15);--warning: #f59e0b;--danger: #ef4444;--border: rgba(15, 23, 42, .1);--glass-bg: rgba(255, 255, 255, .95);--glass-border: rgba(15, 23, 42, .08);--glass-shadow: 0 4px 6px -1px rgba(0, 0, 0, .05), 0 2px 4px -1px rgba(0, 0, 0, .03);--mesh-1: rgba(99, 102, 241, .05);--mesh-2: rgba(236, 72, 153, .05);--mesh-3: rgba(14, 165, 233, .05);--mesh-4: rgba(16, 185, 129, .05)}*,*:before,*:after{-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;box-sizing:border-box}html{-webkit-text-size-adjust:100%!important;-moz-text-size-adjust:100%!important;-ms-text-size-adjust:100%!important;text-size-adjust:100%!important;font-size:16px!important;-webkit-overflow-scrolling:touch;scroll-behavior:smooth}button,a,.glass-panel,.glass-card,[role=button]{touch-action:manipulation}.refresh-rocket-btn:hover .refresh-icon-spin{animation:rocket-spin .8s cubic-bezier(.4,0,.2,1) infinite}@keyframes rocket-spin{0%{transform:rotate(0) scale(1)}50%{transform:rotate(180deg) scale(1.2)}to{transform:rotate(360deg) scale(1)}}.refresh-rocket-btn:active{transform:scale(.9)!important}:root{--vh-full: 100vh;--vh-full: calc(var(--vh, 1vh) * 100)}@supports (padding: env(safe-area-inset-bottom)){.safe-bottom{padding-bottom:env(safe-area-inset-bottom)}.safe-top{padding-top:env(safe-area-inset-top)}}input:focus,select:focus{scroll-margin-bottom:150px}textarea:focus{scroll-margin-bottom:200px}img,video,canvas{-webkit-touch-callout:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;pointer-events:none;-webkit-user-drag:none;-khtml-user-drag:none;-moz-user-drag:none;-o-user-drag:none;user-drag:none}button img,a img,[role=button] img{pointer-events:auto}.admin-layout{display:flex;min-height:100vh;min-height:100dvh;direction:rtl}.admin-sidebar{width:260px;min-height:100vh;min-height:100dvh;position:sticky;top:0;overflow-y:auto;-webkit-overflow-scrolling:touch;background:var(--bg-card);border-left:1px solid 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option{background-color:var(--surface)!important;color:var(--text-primary)!important}@media(max-width:768px){.admin-layout{flex-direction:column}.admin-sidebar{width:100%;min-height:auto;position:relative;flex-direction:row!important;padding:12px!important;overflow-x:auto}.admin-sidebar .logo{display:none}.admin-sidebar nav{flex-direction:row!important;gap:4px!important;flex-wrap:nowrap}.admin-sidebar nav button span:last-child{display:none}.admin-main{padding:16px}}@media(max-width:768px){.hidden-mobile{display:none!important}.system-status-widget{gap:6px!important;padding:4px 8px!important;font-size:.72rem!important}@media(max-width:400px){.exam-header{padding:8px 10px!important;gap:4px!important}.circular-timer-container{transform:scale(.8);transform-origin:right center}.system-status-widget{gap:4px!important;padding:4px 6px!important;font-size:.65rem!important}}.question-image-section{flex:1 1 100%!important;min-width:100%!important}}.question-image-section 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var(--border);background:#0003;color:var(--text-primary);font-family:var(--font);font-size:1rem;transition:all .2s;backdrop-filter:blur(4px) saturate(150%);-webkit-backdrop-filter:blur(4px) saturate(150%);transform:translateZ(0)}.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow);background:#0000004d}@keyframes spin{to{transform:rotate(360deg)}}@keyframes skeleton-shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton{background:linear-gradient(90deg,var(--bg-secondary) 25%,rgba(255,255,255,.05) 37%,var(--bg-secondary) 63%);background-size:400% 100%;animation:skeleton-shimmer 1.4s ease infinite;border-radius:var(--radius-sm);display:inline-block;vertical-align:middle}.gpu-accelerated{transform:translateZ(0)}.smooth-transition{transition:all .3s cubic-bezier(.4,0,.2,1)}@keyframes fadeIn{0%{opacity:0;transform:translate3d(0,15px,0)}to{opacity:1;transform:translateZ(0)}}.animate-fade{animation:fadeIn .25s 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cubic-bezier(.2,.8,.2,1),box-shadow .2s!important}.tactile-touch:active{transform:scale(.96) translateZ(0)!important}@keyframes fade-slide-up{0%{opacity:0;transform:translateY(30px) translateZ(0)}to{opacity:1;transform:translateY(0) translateZ(0)}}.stagger-item{opacity:0;animation:fade-slide-up .5s cubic-bezier(.2,.8,.2,1) forwards;will-change:transform,opacity}@keyframes slow-spin{0%{transform:rotate(0) translateZ(0)}to{transform:rotate(360deg) translateZ(0)}}.fluid-blob-1{animation:slow-spin 20s linear infinite;will-change:transform}.fluid-blob-2{animation:slow-spin 25s linear infinite reverse;will-change:transform}.fluid-blob-3{animation:slow-spin 30s linear infinite;will-change:transform}@keyframes premium-shimmer{0%,70%{transform:translate(-150%) skew(-15deg)}to{transform:translate(400%) skew(-15deg)}}.premium-course-card:after{content:"";position:absolute;top:0;left:0;width:35%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.03),rgba(139,92,246,.07),rgba(255,255,255,.03),transparent);transform:translate(-150%) skew(-15deg);animation:premium-shimmer 7s ease-in-out infinite;will-change:transform;backface-visibility:hidden;pointer-events:none;z-index:5}.premium-course-card:before{content:"";position:absolute;top:0;left:8%;right:8%;height:1.5px;background:linear-gradient(90deg,transparent,#6366f1,#a855f7,#d946ef,#06b6d4,transparent);z-index:10;pointer-events:none;opacity:.7;border-radius:1px}.exam-ticket-card{position:relative;overflow:hidden}.exam-ticket-card:after{content:"";position:absolute;top:0;left:0;width:35%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.03),rgba(99,102,241,.06),rgba(255,255,255,.03),transparent);transform:translate(-150%) skew(-15deg);animation:premium-shimmer 7s ease-in-out 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10px 30px #0000004d;border:2px solid transparent;position:relative;overflow:hidden;text-align:center;color:#fff;transform-style:preserve-3d;transition:transform .4s cubic-bezier(.25,.46,.45,.94),box-shadow .4s}.podium-base:before{content:"";position:absolute;inset:5px;border-radius:16px;padding:2px;background:linear-gradient(45deg,rgba(255,255,255,.1),transparent);z-index:0;pointer-events:none}.podium-1 .podium-base{height:220px;background:linear-gradient(135deg,#fbbf24,#f59e0b);box-shadow:0 15px 40px #fbbf2466;border:1px solid #fde047}.podium-2 .podium-base{height:180px;background:linear-gradient(135deg,#9ca3af,#6b7280);box-shadow:0 15px 40px #9ca3af66;border:1px solid #e5e7eb}.podium-3 .podium-base{height:160px;background:linear-gradient(135deg,#cd7f32,sienna);box-shadow:0 15px 40px #cd7f3266;border:1px solid #fbbf24}.podium-rank{font-size:3rem;font-weight:900;color:#fff;text-shadow:2px 2px 4px rgba(0,0,0,.5);margin-bottom:.5rem;position:relative;z-index:1}.podium-name{font-size:1rem;font-weight:700;color:#fff;margin-bottom:.5rem;position:relative;z-index:1;white-space:normal;word-break:break-word;text-align:center;max-width:100%;line-height:1.3}.podium-score{font-size:1.2rem;font-weight:800;color:#fff;text-shadow:1px 1px 2px rgba(0,0,0,.5);position:relative;z-index:1}.podium-avatar{width:80px;height:80px;border-radius:50%;border:4px solid white;box-shadow:0 8px 16px #0000004d;margin-bottom:-15px;z-index:20;position:relative;background:var(--surface);display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:800;color:var(--text-primary);object-fit:cover}.podium-1 .podium-avatar{width:100px;height:100px;border-color:#fcd34d;box-shadow:0 0 25px #fbbf2499}.podium-2 .podium-avatar{border-color:#e5e7eb;box-shadow:0 0 15px #9ca3af99}.podium-3 .podium-avatar{border-color:#fdba74;box-shadow:0 0 15px #cd7f3299}.crown-icon{position:absolute;top:-40px;left:50%;transform:translate(-50%);font-size:2.5rem;z-index:25}.student-rank-list{background:linear-gradient(135deg,#1f2937,#111827);border-radius:15px;padding:1.5rem;border:1px solid #374151;max-width:800px;margin:0 auto}.rank-item{display:flex;justify-content:space-between;align-items:center;padding:1rem;margin-bottom:.5rem;background:#37415180;border-radius:10px;border:1px solid transparent}.rank-position{font-weight:700;font-size:1.2rem;color:#9ca3af;width:3rem;text-align:center}.rank-name{font-weight:600;color:#d1d5db;flex-grow:1;margin:0 1rem;font-size:1rem}.rank-score{font-weight:800;font-size:1.1rem;color:#10b981}.current-user-rank{background:linear-gradient(135deg,#3b82f633,#2563eb33)!important;border:1px solid #3b82f6!important;box-shadow:0 0 15px #3b82f64d}.current-user-rank .rank-name{color:#60a5fa}.current-user-rank .rank-position{color:#93c5fd}.shine-effect{background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.1),transparent 70%);background-size:200% 100%;animation:shine 3s linear infinite}@keyframes shine{0%{background-position:200% 0}to{background-position:-200% 0}}.text-neon{text-shadow:0 0 5px var(--primary),0 0 10px var(--primary-glow)}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:300px;gap:16px}.loading-text{color:var(--text-secondary);font-size:.95rem}.stat-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:24px}.stat-card{display:flex;align-items:center;gap:14px;padding:20px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .3s}.stat-card:hover{border-color:var(--primary);box-shadow:0 4px 15px #0000001a;transform:translateY(-2px)}.stat-icon{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex-shrink:0}.stat-info h3{font-size:1.5rem;font-weight:800;color:var(--text-primary);margin:0}.stat-info p{font-size:.8rem;color:var(--text-secondary);margin:4px 0 0}.search-box{position:relative;display:flex;align-items:center}.search-box .form-input,.search-box input{width:100%;padding-right:40px}.search-icon{position:absolute;right:14px;font-size:1rem;color:var(--text-muted);pointer-events:none}.modal-overlay{position:fixed;inset:0;background:#000000d9;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px;box-sizing:border-box;overflow-y:auto}.modal{background:var(--bg-card);border:1px solid var(--glass-border);border-radius:var(--radius-xl);width:100%;max-width:560px;max-height:90vh;box-shadow:0 25px 50px -12px #00000080,0 0 30px #8b5cf61a;overflow:hidden;display:flex;flex-direction:column;animation:modal-pop .4s cubic-bezier(.16,1,.3,1);box-sizing:border-box}@keyframes modal-pop{0%{opacity:0;transform:scale(.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border)}.modal-header h3{font-size:1.2rem;font-weight:800;color:var(--text-primary);margin:0}.modal-close{width:36px;height:36px;border-radius:50%;border:none;background:#ffffff0d;color:var(--text-secondary);font-size:1.2rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.modal-close:hover{background:#ef44441a;color:var(--danger)}.modal-body{padding:24px;overflow-y:auto;max-height:60vh}.modal-footer{display:flex;align-items:center;justify-content:flex-end;gap:12px;padding:16px 24px;border-top:1px solid var(--border)}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:.85rem;font-weight:600;color:var(--text-secondary);margin-bottom:6px}.form-group select.form-input{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' 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50%)}.login-box{width:100%;max-width:420px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:40px 32px;box-shadow:0 25px 50px #0000004d;text-align:center}.teacher-badge{margin-bottom:20px}.teacher-badge img{width:80px;height:80px;border-radius:50%}.login-box h1{font-size:1.6rem;font-weight:900;color:var(--text-primary);margin:0 0 8px}.subtitle{font-size:.9rem;color:var(--text-secondary);margin-bottom:28px}@keyframes bounce-in{0%{opacity:0;transform:scale(.9) translateY(20px)}50%{transform:scale(1.02)}to{opacity:1;transform:scale(1) translateY(0)}}.animate-bounce{animation:bounce-in .4s cubic-bezier(.2,.8,.2,1) forwards}.student-table{width:100%;border-collapse:separate;border-spacing:0 6px}:root{--danger-glow: rgba(239, 68, 68, .3)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#fff3}@media(max-width:768px){.admin-layout{flex-direction:column}.admin-sidebar{display:none}.admin-main{padding:12px 12px 80px}.admin-header{flex-direction:column;align-items:stretch;gap:10px;margin-bottom:16px}.admin-header h1{font-size:1.2rem;gap:8px}.stat-cards{grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:16px}.stat-card{padding:12px;gap:10px;flex-direction:column;text-align:center}.stat-icon{width:36px;height:36px;border-radius:10px;font-size:1rem}.stat-info h3{font-size:1.3rem}.stat-info p{font-size:.7rem}.modal-overlay{padding:0;align-items:flex-end}.modal{max-width:100%;max-height:90vh;border-radius:20px 20px 0 0;animation:slide-up-modal .3s ease forwards}.modal-header{padding:16px}.modal-header h3{font-size:1rem}.modal-body{padding:16px;max-height:55vh}.modal-footer{padding:12px 16px;padding-bottom:calc(12px + env(safe-area-inset-bottom,0px))}.form-input{padding:12px;font-size:16px!important;border-radius:var(--radius-sm)}.form-group{margin-bottom:12px}.form-group label{font-size:.8rem}.input{padding:12px;font-size:16px!important}.btn{padding:12px 20px;min-height:44px;font-size:.9rem}.btn-sm{padding:8px 12px;min-height:36px;font-size:.8rem}.btn-lg{padding:14px 24px}.search-box input,.search-box .form-input{font-size:16px!important}.login-page{padding:16px}.login-card{padding:32px 20px 24px;border-radius:24px}.login-avatar-wrapper{width:100px;height:100px;margin-bottom:16px}.login-avatar-img{width:100px;height:100px}.login-teacher-name{font-size:1.25rem}.login-otp-container{gap:6px}.login-otp-digit{width:44px;height:54px;font-size:1.3rem;border-radius:12px}.login-submit-btn{padding:14px 20px;font-size:1rem;border-radius:14px}.login-orb-1{width:180px;height:180px}.login-orb-2{width:140px;height:140px}.login-orb-3{width:100px;height:100px}.login-container{padding:16px}.login-box{padding:28px 20px;border-radius:var(--radius-lg)}.login-box h1{font-size:1.3rem}.glass-card{border-radius:var(--radius-md)}.loading-container{min-height:200px}}@keyframes slide-up-modal{0%{opacity:0;transform:translateY(100%)}to{opacity:1;transform:translateY(0)}}@media(max-width:380px){.stat-cards{grid-template-columns:1fr 1fr;gap:6px}.stat-card{padding:10px 8px}.stat-info h3{font-size:1.1rem}.modal-body{padding:12px}.btn{padding:10px 16px;font-size:.85rem}}.btn-icon{width:40px;height:40px;border-radius:var(--radius-sm);border:1px solid var(--border);background:#ffffff0a;color:var(--text-secondary);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);flex-shrink:0;padding:0}.btn-icon:hover{background:#ffffff14;border-color:var(--primary);color:var(--primary);transform:scale(1.05)}.btn-icon:active{transform:scale(.95)}.btn-glass{border:1px solid rgba(255,255,255,.1);background:#ffffff14;cursor:pointer;transition:all .25s}.btn-glass:hover{background:#ffffff1f;border-color:#fff3}.loading-spinner{width:40px;height:40px;border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin:60px auto}.news-container{max-width:820px;margin:0 auto;padding-bottom:40px}.news-header-actions{display:flex;justify-content:flex-end;margin-bottom:28px}.news-list{display:flex;flex-direction:column;gap:20px}.news-card{position:relative;overflow:hidden;padding:28px 28px 24px;border-radius:20px;border:1px solid var(--glass-border);background:var(--bg-card);box-shadow:var(--glass-shadow);transition:transform .3s,box-shadow .3s,border-color 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bottom,var(--warning),#ef4444)}.news-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:16px;gap:12px}.news-card-info{display:flex;align-items:center;gap:14px;flex:1;min-width:0}.news-type-icon{width:42px;height:42px;min-width:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.news-type-icon.type-news{background:#6366f11f;color:var(--primary)}.news-type-icon.type-alert{background:#eab3081f;color:var(--warning)}.news-card-title{margin:0;font-size:1.1rem;font-weight:800;color:var(--text-primary);line-height:1.5}.news-card-date{display:flex;align-items:center;gap:6px;font-size:.78rem;color:var(--text-muted);margin-top:4px}.news-card-actions{display:flex;gap:8px;flex-shrink:0}.news-card-content{font-size:.95rem;line-height:1.7;color:var(--text-secondary);background:#0000001f;padding:18px 20px;border-radius:14px;white-space:pre-wrap;word-break:break-word;border:1px solid rgba(255,255,255,.03)}.news-empty{padding:60px 24px;text-align:center;color:var(--text-muted);border-radius:20px}.news-empty-icon{font-size:3.5rem;margin-bottom:20px;opacity:.4}.news-empty h3{font-size:1.1rem;font-weight:700;color:var(--text-secondary);margin:0}.news-modal-type-selector{display:flex;gap:12px}.news-type-btn{flex:1;padding:14px;border-radius:14px;border:1px solid var(--border);background:#ffffff0a;color:var(--text-secondary);font-weight:700;font-size:.92rem;cursor:pointer;display:flex;justify-content:center;align-items:center;gap:8px;transition:all .25s;font-family:var(--font)}.news-type-btn.active-news{background:#6366f126;border-color:var(--primary);color:var(--primary);box-shadow:0 0 16px #6366f126}.news-type-btn.active-alert{background:#eab30826;border-color:var(--warning);color:var(--warning);box-shadow:0 0 16px #eab30826}.news-type-btn:hover:not(.active-news):not(.active-alert){background:#ffffff14;border-color:var(--text-muted)}@media(max-width:768px){.news-container{padding-bottom:24px}.news-card{padding:20px 18px 18px;border-radius:16px}.news-card-title{font-size:1rem}.news-type-icon{width:36px;height:36px;min-width:36px;border-radius:10px}.news-card-content{padding:14px 16px;font-size:.9rem;border-radius:12px}.news-modal-type-selector{gap:8px}.news-type-btn{padding:12px;font-size:.85rem;border-radius:12px}.btn-icon{width:36px;height:36px;border-radius:10px}}@media(max-width:380px){.news-card{padding:16px 14px 14px}.news-card-info{gap:10px}.news-card-content{padding:12px 14px}}.toast-container{position:fixed;top:20px;right:20px;z-index:99999;display:flex;flex-direction:column;gap:10px;pointer-events:none;max-width:420px;width:calc(100% - 40px)}.toast{display:flex;align-items:center;gap:12px;padding:14px 20px;border-radius:var(--radius-md);box-shadow:0 8px 32px #00000059,0 0 0 1px #ffffff0f;font-family:var(--font);font-size:.92rem;font-weight:600;color:#fff;pointer-events:auto;animation:toast-slide-in .4s cubic-bezier(.16,1,.3,1);direction:rtl;line-height:1.5}.toast.success{background:linear-gradient(135deg,#10b981eb,#059669eb);border:1px solid rgba(16,185,129,.4)}.toast.error{background:linear-gradient(135deg,#ef4444eb,#dc2626eb);border:1px solid rgba(239,68,68,.4)}.toast.warning{background:linear-gradient(135deg,#f59e0beb,#d97706eb);border:1px solid rgba(245,158,11,.4)}.toast.info{background:linear-gradient(135deg,#6366f1eb,#4f46e5eb);border:1px solid rgba(99,102,241,.4)}.toast-icon{font-size:1.2rem;flex-shrink:0}.toast-message{flex:1}@keyframes toast-slide-in{0%{opacity:0;transform:translate(40px) scale(.95)}to{opacity:1;transform:translate(0) scale(1)}}@media(max-width:768px){.toast-container{top:10px;right:10px;left:10px;width:auto;max-width:none}.toast{padding:12px 16px;font-size:.85rem;border-radius:var(--radius-sm)}}.leaderboard-container{max-width:900px;margin:0 auto;padding:20px 0 40px}.leaderboard-podium{display:flex;justify-content:center;align-items:flex-end;gap:24px;margin-bottom:60px;min-height:300px;padding:0 16px}.leaderboard-item{transition:all .25s cubic-bezier(.4,0,.2,1)}.leaderboard-item:hover{transform:translate(4px);background:#ffffff0f!important}.current-user-glow{box-shadow:0 0 20px #6366f133}@media(max-width:768px){.leaderboard-podium{gap:12px;min-height:220px;margin-bottom:30px;padding:0 12px}}@keyframes slideDown{0%{transform:translateY(-100%);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes whatsapp-pulse{0%,to{box-shadow:0 4px 20px #25d36666}50%{box-shadow:0 4px 30px #25d366b3,0 0 0 8px #25d3661a}}[data-theme=light] .form-input,[data-theme=light] .input{background:var(--bg-secondary);box-shadow:inset 0 1px 2px #0000000a}[data-theme=light] .form-input:focus,[data-theme=light] .input:focus{background:#fff;box-shadow:0 0 0 3px var(--primary-glow),inset 0 1px 2px #0000000a}[data-theme=light] .glass-panel,[data-theme=light] .glass-card{background:#fffffffa;border-color:var(--border);box-shadow:0 1px 3px #0000000f,0 1px 2px #0000000a}[data-theme=light] .glass-card:hover{box-shadow:0 4px 12px #00000014,0 0 0 1px var(--primary-glow);border-color:var(--primary-glow)}[data-theme=light] .modal-overlay{background:#0f172a66;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}[data-theme=light] .modal{background:#fff;border:1px solid var(--border);box-shadow:0 25px 50px -12px #00000026}[data-theme=light] .student-rank-list{background:linear-gradient(135deg,#f8fafc,#f1f5f9);border-color:var(--border)}[data-theme=light] .rank-item{background:#fffc;border:1px solid var(--border)}[data-theme=light] .rank-item:hover{background:#6366f10f;border-color:var(--primary)}[data-theme=light] .rank-position{color:var(--text-muted)}[data-theme=light] .rank-name{color:var(--text-primary)}[data-theme=light] .current-user-rank{background:linear-gradient(135deg,#6366f114,#6366f10a)!important;border:1px solid rgba(99,102,241,.3)!important;box-shadow:0 0 12px #6366f11a}[data-theme=light] .podium-base{background:linear-gradient(135deg,#e2e8f0,#cbd5e1);box-shadow:0 8px 20px #0000001a}[data-theme=light] .podium-1 .podium-base{background:linear-gradient(135deg,#fbbf24,#f59e0b);box-shadow:0 10px 30px #fbbf2440}[data-theme=light] .podium-2 .podium-base{background:linear-gradient(135deg,#d1d5db,#9ca3af);box-shadow:0 10px 30px #9ca3af40}[data-theme=light] .podium-3 .podium-base{background:linear-gradient(135deg,#cd7f32,sienna);box-shadow:0 10px 30px #cd7f3240}[data-theme=light] .news-card{background:#fff;border-color:var(--border);box-shadow:0 1px 3px #0000000f}[data-theme=light] .news-card:hover{box-shadow:0 8px 24px #00000014,0 0 0 1px var(--primary-glow);border-color:#6366f133}[data-theme=light] .news-card-content{background:var(--bg-secondary);border-color:var(--border)}[data-theme=light] .news-type-btn{background:var(--bg-secondary)}[data-theme=light] .news-type-btn:hover:not(.active-news):not(.active-alert){background:#6366f10f}[data-theme=light] .btn-secondary{background:var(--bg-secondary);border-color:var(--border)}[data-theme=light] .btn-primary{box-shadow:0 2px 8px var(--primary-glow)}[data-theme=light] .leaderboard-item:hover{background:#6366f10d!important}[data-theme=light] .current-user-glow{box-shadow:0 0 15px #6366f11f}[data-theme=light] .login-card{box-shadow:0 25px 50px -12px #0000001a}[data-theme=light] .question-card{background:#fff;border-color:var(--border);box-shadow:0 1px 3px #0000000a}[data-theme=light] .option-item{background:#fff}[data-theme=light] .option-item:hover,[data-theme=light] .option-letter{background:var(--bg-secondary)}[data-theme=light] .stat-card{background:#fff;border-color:var(--border);box-shadow:0 1px 3px #0000000a}[data-theme=light] .stat-card:hover{box-shadow:0 4px 12px #0000000f}[data-theme=light] .tabs{background:var(--bg-secondary)}[data-theme=light] .tab.active{background:#fff;box-shadow:0 1px 3px #00000014}[data-theme=light] .skeleton{background:linear-gradient(90deg,#e2e8f0 25%,#f1f5f9 37%,#e2e8f0 63%);background-size:400% 100%}[data-theme=light] .shine-effect{background:linear-gradient(120deg,transparent 30%,rgba(0,0,0,.02),transparent 70%);background-size:200% 100%}[data-theme=light] .text-neon{text-shadow:none;color:var(--primary)}:root{color-scheme:dark}[data-theme=light]{color-scheme:light}input:not([type=checkbox]):not([type=radio]),select,textarea,option{background-color:var(--surface)!important;color:var(--text-primary)!important;-webkit-appearance:none;appearance:none}select{background-image:url(data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23ffffff%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.4-12.8z%22%2F%3E%3C%2Fsvg%3E);background-repeat:no-repeat;background-position:left 1rem top 50%;background-size:.65rem auto;padding-left:2.5rem!important}[data-theme=light] select{background-image:url(data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23020617%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.4-12.8z%22%2F%3E%3C%2Fsvg%3E)}input::placeholder,textarea::placeholder{color:var(--text-muted)!important;opacity:1!important}@media(max-height:500px){.bottom-nav{display:none!important}}@keyframes shake-error{0%,to{transform:translate(0)}20%{transform:translate(-8px)}40%{transform:translate(8px)}60%{transform:translate(-8px)}80%{transform:translate(8px)}}.shake-animation{animation:shake-error .4s cubic-bezier(.36,.07,.19,.97) both;border-color:var(--danger)!important}