:root{--bg-primary: #06080f;--bg-secondary: #0d1117;--bg-card: #111827;--bg-input: #1a2236;--bg-hover: #1e293b;--text-primary: #e8ecf4;--text-secondary: #94a3b8;--text-muted: #64748b;--accent: #f59e0b;--accent-hover: #d97706;--accent-glow: rgba(245, 158, 11, .15);--accent-soft: rgba(245, 158, 11, .08);--border: #1e293b;--border-hover: #334155;--danger: #ef4444;--success: #10b981;--info: #3b82f6;--gradient-main: linear-gradient(135deg, #f59e0b 0%, #ef4444 40%, #8b5cf6 100%);--gradient-subtle: linear-gradient(135deg, rgba(245,158,11,.1) 0%, rgba(139,92,246,.1) 100%);--shadow-sm: 0 2px 8px rgba(0,0,0,.3);--shadow-md: 0 4px 24px rgba(0,0,0,.4);--shadow-lg: 0 8px 40px rgba(0,0,0,.5);--shadow-glow: 0 0 30px rgba(245,158,11,.08);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--font-body: "Plus Jakarta Sans", "Noto Sans Arabic", sans-serif;--font-mono: "JetBrains Mono", monospace;--sidebar-width: 260px;--topbar-height: 0px}[data-theme=light]{--bg-primary: #f5f2eb;--bg-secondary: #ede9e0;--bg-card: #ffffff;--bg-input: #f0ede6;--bg-hover: #e8e4db;--text-primary: #1a1a2e;--text-secondary: #4a5568;--text-muted: #718096;--accent: #d97706;--accent-hover: #b45309;--accent-glow: rgba(217, 119, 6, .12);--accent-soft: rgba(217, 119, 6, .06);--border: #e2dfd7;--border-hover: #d1cdc4;--shadow-sm: 0 2px 8px rgba(0,0,0,.06);--shadow-md: 0 4px 24px rgba(0,0,0,.08);--shadow-lg: 0 8px 40px rgba(0,0,0,.1);--shadow-glow: 0 0 30px 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slideInRight{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes gradient{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes popIn{0%{opacity:0;transform:scale(.8)}70%{transform:scale(1.05)}to{opacity:1;transform:scale(1)}}.animate-fade-up{animation:fadeInUp .6s ease forwards}.animate-fade{animation:fadeIn .5s ease forwards}.animate-slide-left{animation:slideInLeft .5s ease forwards}.animate-slide-right{animation:slideInRight .5s ease forwards}.animate-scale{animation:scaleIn .4s ease forwards}.animate-pop{animation:popIn .5s ease forwards}.stagger>*:nth-child(1){animation-delay:.05s}.stagger>*:nth-child(2){animation-delay:.1s}.stagger>*:nth-child(3){animation-delay:.15s}.stagger>*:nth-child(4){animation-delay:.2s}.stagger>*:nth-child(5){animation-delay:.25s}.stagger>*:nth-child(6){animation-delay:.3s}.stagger>*:nth-child(7){animation-delay:.35s}.stagger>*:nth-child(8){animation-delay:.4s}.stagger>*:nth-child(9){animation-delay:.45s}.stagger>*:nth-child(10){animation-delay:.5s}.stagger>*:nth-child(11){animation-delay:.55s}.stagger>*:nth-child(12){animation-delay:.6s}.stagger>*{opacity:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:none;border-radius:var(--radius-md);font-family:var(--font-body);font-weight:600;font-size:.9375rem;cursor:pointer;transition:all .25s ease;white-space:nowrap;background:var(--bg-input);color:var(--text-primary)}.btn:hover{background:var(--bg-hover);transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{background:var(--gradient-main);color:#fff;box-shadow:0 4px 20px #f59e0b40}.btn-primary:hover{box-shadow:0 6px 28px #f59e0b59;filter:brightness(1.08)}.btn-sm{padding:8px 16px;font-size:.8125rem;border-radius:var(--radius-sm)}.btn-lg{padding:16px 40px;font-size:1.0625rem;border-radius:var(--radius-lg)}.btn-icon{padding:10px;width:42px;height:42px;border-radius:var(--radius-md)}.btn-ghost{background:transparent}.btn-ghost:hover{background:var(--accent-soft);color:var(--accent)}.btn-danger{background:#ef44441f;color:var(--danger)}.btn-danger:hover{background:#ef444433}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-glow);transition:all .3s ease}.card:hover{border-color:var(--border-hover)}.card-interactive:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:var(--shadow-md)}.input{width:100%;padding:12px 16px;border-radius:var(--radius-md);background:var(--bg-input);color:var(--text-primary);border:1px solid var(--border);font-family:var(--font-body);font-size:.9375rem;outline:none;transition:border-color .25s ease}.input:focus{border-color:var(--accent)}.input::placeholder{color:var(--text-muted)}.select{width:100%;padding:12px 16px;border-radius:var(--radius-md);background:var(--bg-input);color:var(--text-primary);border:1px solid var(--border);font-family:var(--font-body);font-size:.9375rem;cursor:pointer;outline:none;-moz-appearance:none;appearance:none;-webkit-appearance:none;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 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14px;display:flex;flex-direction:column;gap:4px;position:fixed;top:0;left:0;height:100vh;overflow-y:auto;z-index:100;transition:transform .3s ease}[dir=rtl] .sidebar{left:auto;right:0;border-right:none;border-left:1px solid var(--border)}.sidebar-brand{display:flex;align-items:center;gap:10px;padding:8px 12px;margin-bottom:16px}.sidebar-brand-icon{width:38px;height:38px;border-radius:var(--radius-md);background:var(--gradient-main);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;color:#fff;flex-shrink:0}.sidebar-brand-name{font-size:1.125rem;font-weight:800}.sidebar-profile{padding:12px 14px;border-radius:var(--radius-md);background:var(--bg-input);border:1px solid var(--border);margin-bottom:12px}.sidebar-profile-label{font-size:.6875rem;color:var(--text-muted);margin-bottom:2px}.sidebar-profile-uni{font-size:.8125rem;font-weight:600;margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-profile-detail{font-size:.6875rem;color:var(--accent);font-weight:600}.sidebar-nav-item{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:var(--radius-md);border:none;cursor:pointer;font-size:.875rem;font-weight:500;font-family:var(--font-body);text-align:left;width:100%;background:transparent;color:var(--text-secondary);transition:all .2s ease}[dir=rtl] .sidebar-nav-item{text-align:right}.sidebar-nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar-nav-item.active{background:var(--accent-soft);color:var(--accent);font-weight:700}.sidebar-nav-icon{font-size:1.125rem;flex-shrink:0;width:24px;text-align:center}.sidebar-footer{margin-top:auto;display:flex;flex-direction:column;gap:8px;padding-top:12px}.main-content{flex:1;margin-left:var(--sidebar-width);padding:28px 36px;max-width:calc(100% - var(--sidebar-width));min-height:100vh}[dir=rtl] .main-content{margin-left:0;margin-right:var(--sidebar-width)}.mobile-topbar{display:none;position:fixed;top:0;left:0;right:0;height:56px;background:var(--bg-secondary);border-bottom:1px solid var(--border);padding:0 16px;z-index:90;align-items:center;justify-content:space-between}.mobile-topbar-brand{display:flex;align-items:center;gap:8px}.hamburger{width:40px;height:40px;border:none;background:transparent;cursor:pointer;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;padding:8px}.hamburger span{display:block;width:22px;height:2px;background:var(--text-primary);border-radius:2px;transition:all .3s ease}.hamburger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger.open span:nth-child(2){opacity:0}.hamburger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.sidebar-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:95;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.chat-container{display:flex;flex-direction:column;height:calc(100vh - 56px)}.chat-messages{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:14px;padding:8px 0}.chat-bubble{max-width:82%;padding:14px 20px;border-radius:var(--radius-lg);font-size:.9375rem;line-height:1.75;white-space:pre-wrap;word-wrap:break-word;animation:scaleIn .3s ease}.chat-bubble-user{background:var(--gradient-main);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}[dir=rtl] .chat-bubble-user{align-self:flex-start;border-bottom-right-radius:var(--radius-lg);border-bottom-left-radius:4px}.chat-bubble-ai{background:var(--bg-card);border:1px solid var(--border);align-self:flex-start;border-bottom-left-radius:4px}[dir=rtl] .chat-bubble-ai{align-self:flex-end;border-bottom-left-radius:var(--radius-lg);border-bottom-right-radius:4px}.chat-input-row{display:flex;gap:10px;padding-top:12px}.chat-input{flex:1}.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted);text-align:center;gap:12px}.chat-empty-icon{font-size:3rem;opacity:.4;animation:float 3s ease infinite}.chat-suggestions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:12px;max-width:500px}.code-editor{width:100%;min-height:200px;padding:16px;border-radius:var(--radius-md);background:#0d1117;color:#c9d1d9;border:1px solid var(--border);font-family:var(--font-mono);font-size:.875rem;line-height:1.6;resize:vertical;outline:none;-moz-tab-size:2;tab-size:2}[data-theme=light] .code-editor{background:#1e1e1e;color:#d4d4d4}.code-output{padding:16px;border-radius:var(--radius-md);background:#0a0a0a;color:#10b981;border:1px solid var(--border);font-family:var(--font-mono);font-size:.8125rem;line-height:1.5;min-height:80px;white-space:pre-wrap;max-height:300px;overflow-y:auto}[data-theme=light] .code-output{background:#111}.flashcard{perspective:1000px;width:100%;max-width:500px;height:280px;margin:0 auto;cursor:pointer}.flashcard-inner{position:relative;width:100%;height:100%;transition:transform .6s ease;transform-style:preserve-3d}.flashcard-inner.flipped{transform:rotateY(180deg)}.flashcard-face{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:var(--radius-xl);display:flex;align-items:center;justify-content:center;padding:32px;text-align:center;font-size:1.125rem;line-height:1.6}.flashcard-front{background:var(--bg-card);border:2px solid var(--accent);color:var(--text-primary);font-weight:700}.flashcard-back{background:var(--gradient-main);color:#fff;transform:rotateY(180deg);font-weight:500}.timer-circle{width:200px;height:200px;border-radius:50%;border:4px solid var(--border);display:flex;align-items:center;justify-content:center;margin:0 auto;position:relative}.timer-circle.active{border-color:var(--accent);box-shadow:0 0 40px var(--accent-glow)}.timer-circle.break-mode{border-color:var(--success);box-shadow:0 0 40px #10b98126}.timer-display{font-size:2.5rem;font-weight:800;font-family:var(--font-mono);letter-spacing:2px}.timer-label{font-size:.75rem;color:var(--text-muted);margin-top:4px;text-transform:uppercase;letter-spacing:1px}.schedule-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.schedule-day{padding:12px 8px;border-radius:var(--radius-md);background:var(--bg-input);border:1px solid var(--border);min-height:120px;font-size:.8125rem}.schedule-day-header{font-weight:700;font-size:.75rem;margin-bottom:8px;color:var(--accent);text-transform:uppercase;letter-spacing:.5px}.schedule-task{padding:6px 8px;border-radius:6px;margin-bottom:4px;background:var(--accent-soft);border-left:3px solid var(--accent);font-size:.6875rem;font-weight:500}[dir=rtl] .schedule-task{border-left:none;border-right:3px solid var(--accent)}@media(max-width:1024px){.schedule-grid{grid-template-columns:repeat(4,1fr)}}@media(max-width:768px){.sidebar{transform:translate(-100%);width:280px}[dir=rtl] .sidebar{transform:translate(100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay.open{display:block}.mobile-topbar{display:flex}.main-content{margin-left:0!important;margin-right:0!important;padding:72px 16px 24px;max-width:100%}.schedule-grid{grid-template-columns:repeat(2,1fr)}.chat-container{height:calc(100vh - 120px)}.chat-bubble{max-width:90%}.chat-suggestions{flex-direction:column;align-items:stretch}.flashcard{height:220px}.timer-circle{width:160px;height:160px}.timer-display{font-size:2rem}nav{padding:16px 20px!important}h1{font-size:1.75rem!important}section{padding-left:16px!important;padding-right:16px!important}}@media(max-width:480px){.main-content{padding:68px 12px 20px}.card{padding:16px}.schedule-grid{grid-template-columns:1fr}h1{font-size:1.75rem}h2{font-size:1.375rem}}*{-webkit-tap-highlight-color:transparent}button{transition:all .25s cubic-bezier(.4,0,.2,1)!important}button:active{transform:scale(.97)}input,select,textarea{transition:border-color .2s,box-shadow .2s!important}input:focus,select:focus,textarea:focus{box-shadow:0 0 0 3px #f59e0b26!important}.main-content>div>div[style*="border-radius: 16px"],.main-content [style*="cursor: pointer"][style*=border]{transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}.main-content [style*="cursor: pointer"][style*=border]:hover{transform:translateY(-2px);box-shadow:0 12px 32px #0000002e;border-color:#f59e0b66!important}.main-content>div{animation:fadeUp .35s ease both}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-thumb{background:#94a3b84d;border-radius:99px}::-webkit-scrollbar-thumb:hover{background:#f59e0b80}.app-sidebar button{position:relative}::selection{background:#f59e0b4d}