:root{--font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-display: "Outfit", -apple-system, BlinkMacSystemFont, sans-serif;--bg-dark: #090d16;--bg-surface: #0f172a;--bg-card: rgba(18, 26, 47, .75);--bg-card-hover: rgba(26, 38, 68, .85);--bg-input: rgba(15, 23, 42, .9);--border-subtle: rgba(255, 255, 255, .08);--border-focus: #6366f1;--border-accent: rgba(99, 102, 241, .35);--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--primary: #6366f1;--primary-glow: rgba(99, 102, 241, .35);--primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);--cyan-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);--emerald-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);--success: #10b981;--success-bg: rgba(16, 185, 129, .15);--error: #ef4444;--error-bg: rgba(239, 68, 68, .15);--warning: #f59e0b;--warning-bg: rgba(245, 158, 11, .15);--info: #38bdf8;--info-bg: rgba(56, 189, 248, .15);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .25);--shadow-md: 0 8px 24px rgba(0, 0, 0, .35);--shadow-lg: 0 16px 40px rgba(0, 0, 0, .45);--shadow-glow: 0 0 25px rgba(99, 102, 241, .3);--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-full: 9999px;--transition: all .2s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-dark);color:var(--text-primary);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased;background-image:radial-gradient(at 0% 0%,rgba(99,102,241,.15) 0px,transparent 50%),radial-gradient(at 100% 0%,rgba(236,72,153,.12) 0px,transparent 50%),radial-gradient(at 50% 100%,rgba(6,182,212,.1) 0px,transparent 50%);background-attachment:fixed}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;color:#fff;letter-spacing:-.02em}.glass-panel{background:var(--bg-card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:var(--transition)}.glass-panel:hover{border-color:#ffffff24}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;font-family:var(--font-sans);font-size:.95rem;font-weight:600;border-radius:var(--radius-md);border:none;cursor:pointer;transition:var(--transition);text-decoration:none}.btn-primary{background:var(--primary-gradient);color:#fff;box-shadow:0 4px 15px #6366f159}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 25px #6366f180;filter:brightness(1.08)}.btn-secondary{background:#ffffff0f;color:var(--text-primary);border:1px solid var(--border-subtle)}.btn-secondary:hover:not(:disabled){background:#ffffff1f;border-color:#fff3;transform:translateY(-1px)}.btn-success{background:var(--emerald-gradient);color:#fff;box-shadow:0 4px 15px #10b9814d}.btn-success:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 25px #10b98173}.btn-danger{background:#ef44441f;color:#f87171;border:1px solid rgba(239,68,68,.25)}.btn-danger:hover:not(:disabled){background:#ef444440;color:#fff}.btn-outline{background:transparent;color:var(--text-secondary);border:1px solid var(--border-subtle)}.btn-outline:hover:not(:disabled){color:var(--text-primary);background:#ffffff0d;border-color:#fff3}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.badge{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:var(--radius-full);font-size:.78rem;font-weight:600;letter-spacing:.02em}.badge-primary{background:#6366f126;color:#a5b4fc;border:1px solid rgba(99,102,241,.3)}.badge-success{background:var(--success-bg);color:#6ee7b7;border:1px solid rgba(16,185,129,.3)}.badge-warning{background:var(--warning-bg);color:#fcd34d;border:1px solid rgba(245,158,11,.3)}.badge-danger{background:var(--error-bg);color:#fca5a5;border:1px solid rgba(239,68,68,.3)}.badge-cyan{background:#06b6d426;color:#67e8f9;border:1px solid rgba(6,182,212,.3)}.form-group{display:flex;flex-direction:column;gap:8px}.form-label{font-size:.88rem;font-weight:600;color:var(--text-secondary)}.form-input,.form-textarea{width:100%;padding:12px 16px;background:var(--bg-input);border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-sans);font-size:.95rem;transition:var(--transition)}.form-textarea{font-family:Fira Code,Menlo,Monaco,Courier New,monospace;font-size:.9rem;line-height:1.5;resize:vertical}.form-input:focus,.form-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6366f140;background:#0f172afa}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseGlow{0%,to{box-shadow:0 0 15px #6366f14d}50%{box-shadow:0 0 25px #6366f199}}.animate-fade-in{animation:fadeIn .3s ease-out forwards}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-surface)}::-webkit-scrollbar-thumb{background:#334155;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#475569}html,body{overflow-x:hidden;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.quiz-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px}.nav-tabs-wrapper{display:flex;align-items:center;gap:4px;flex-shrink:0;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}.nav-tabs-wrapper::-webkit-scrollbar{display:none}.nav-tab-btn{display:inline-flex;align-items:center;justify-content:center;gap:5px;padding:5px 9px;border-radius:var(--radius-full);font-size:.8rem;font-weight:600;white-space:nowrap;cursor:pointer;transition:var(--transition);border:1px solid var(--border-subtle);background:#ffffff0a;color:var(--text-secondary);user-select:none;-webkit-user-select:none;min-height:32px;line-height:1}.nav-tab-btn:hover{background:#ffffff14;color:#fff;border-color:#fff3}.nav-tab-btn.active{background:var(--primary-gradient);border-color:transparent;color:#fff;box-shadow:0 2px 10px #6366f159}@media(max-width:480px){.nav-tab-btn{padding:4px 7px;font-size:.74rem;gap:3px;min-height:30px}}@media(max-width:380px){.nav-tab-btn{padding:4px 5px;font-size:.7rem;gap:2px}.nav-brand-text{font-size:1rem!important}}.question-pills-bar{display:flex;gap:8px;overflow-x:auto;flex-wrap:nowrap;padding:4px 2px 10px;-webkit-overflow-scrolling:touch;scrollbar-width:none}.question-pills-bar::-webkit-scrollbar{display:none}.quiz-option-card{display:flex;align-items:center;gap:14px;padding:15px 18px;min-height:52px;border-radius:var(--radius-md);cursor:pointer;user-select:none;-webkit-user-select:none;transition:var(--transition)}.quiz-option-card:active{transform:scale(.985)}.hide-on-mobile{display:inherit}.show-on-mobile{display:none}.desktop-table-view{display:block}.mobile-cards-view{display:none}@media(max-width:768px){:root{--radius-lg: 16px;--radius-md: 12px}body{font-size:15px}h1{font-size:1.65rem!important;line-height:1.25!important}h2{font-size:1.35rem!important;line-height:1.3!important}h3{font-size:1.15rem!important;line-height:1.35!important}.btn{padding:10px 16px;font-size:.88rem;min-height:44px}.glass-panel{border-radius:var(--radius-lg)}.desktop-table-view{display:none!important}.mobile-cards-view{display:flex!important;flex-direction:column;gap:12px}}@media(max-width:640px){.hide-on-mobile{display:none!important}.show-on-mobile{display:block!important}.quiz-grid{grid-template-columns:1fr;gap:14px}.quiz-option-card{padding:12px 14px;gap:10px;min-height:48px}.form-input,.form-textarea{font-size:16px!important;padding:10px 14px}.mobile-sticky-actions{position:sticky;bottom:0;left:0;right:0;background:#0f172af2;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-top:1px solid var(--border-subtle);padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px)) 16px;margin:20px -12px -14px;z-index:50;box-shadow:0 -8px 25px #00000080}}