@import "https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;700&display=swap";:root{--bg-gradient:linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #9333ea 100%);--card-bg:#fff;--card-border:#e2e8f0cc;--card-shadow:0 25px 50px -12px #4f46e540, 0 0 35px #00000014;--primary-purple:#6366f1;--primary-hover:#4f46e5;--accent-violet:#8b5cf6;--text-main:#1e293b;--text-muted:#64748b;--text-light:#94a3b8;--correct-bg:#ecfdf5;--correct-border:#10b981;--correct-text:#065f46;--incorrect-bg:#fef2f2;--incorrect-border:#ef4444;--incorrect-text:#991b1b}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-gradient);color:var(--text-main);justify-content:center;align-items:center;min-height:100vh;padding:24px;font-family:Outfit,sans-serif;display:flex;overflow-x:hidden}body:before{content:"";pointer-events:none;z-index:0;background:radial-gradient(circle at 80% 20%,#ffffff26 0%,#0000 40%),radial-gradient(circle at 20% 80%,#ffffff1a 0%,#0000 40%);width:100vw;height:100vh;position:fixed;top:0;left:0}.app-container{z-index:1;background:var(--card-bg);width:100%;max-width:760px;min-height:580px;box-shadow:var(--card-shadow);border:1px solid var(--card-border);border-radius:28px;flex-direction:column;padding:32px 36px;display:flex;position:relative}.header{border-bottom:1px solid #f1f5f9;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:16px;display:flex}.brand-header{align-items:center;gap:14px;display:flex}.pnp-badge-icon{color:#fff;background:linear-gradient(135deg,#6366f1 0%,#8b5cf6 100%);border-radius:14px;justify-content:center;align-items:center;width:44px;height:44px;font-size:1.4rem;display:flex;box-shadow:0 8px 16px #6366f14d}.title{color:#0f172a;letter-spacing:-.02em;font-size:1.5rem;font-weight:800}.subtitle{color:var(--primary-purple);text-transform:uppercase;letter-spacing:.06em;margin-top:2px;font-size:.8rem;font-weight:700}.header-controls{align-items:center;gap:12px;display:flex}.user-profile{background:#f8fafc;border:1px solid #e2e8f0;border-radius:20px;align-items:center;gap:10px;padding:4px 12px 4px 6px;display:flex}.user-avatar{border:2px solid var(--primary-purple);object-fit:cover;border-radius:50%;width:32px;height:32px}.user-name{color:#1e293b;font-size:.82rem;font-weight:700}.logout-btn{color:var(--text-muted);cursor:pointer;text-align:left;background:0 0;border:none;padding:0;font-size:.72rem;font-weight:600;transition:color .2s}.logout-btn:hover{color:var(--incorrect-border)}.score-pill{background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;align-items:center;gap:8px;padding:6px 14px;font-family:Space Grotesk,sans-serif;font-size:.88rem;font-weight:700;display:flex}.timer-badge{color:#92400e;background:#fef3c7;border:1px solid #f59e0b;border-radius:12px;align-items:center;gap:6px;padding:6px 14px;font-family:Space Grotesk,sans-serif;font-size:.9rem;font-weight:700;display:flex}.pause-btn{color:#334155;cursor:pointer;background:#f1f5f9;border:1px solid #cbd5e1;border-radius:12px;padding:6px 14px;font-family:inherit;font-size:.82rem;font-weight:700;transition:all .2s}.pause-btn:hover{color:#0f172a;background:#e2e8f0}.mode-selector{background:#f1f5f9;border-radius:16px;gap:8px;margin-bottom:20px;padding:4px;display:flex}.mode-btn{color:var(--text-muted);cursor:pointer;text-align:center;background:0 0;border:none;border-radius:12px;flex:1;padding:10px;font-family:inherit;font-size:.85rem;font-weight:700;transition:all .2s}.mode-btn:hover{color:#0f172a}.mode-btn.active{color:var(--primary-purple);background:#fff;box-shadow:0 4px 12px #0000000f}.timer-bar-container{background:#e2e8f0;border-radius:10px;width:100%;height:6px;margin-bottom:20px;overflow:hidden}.timer-bar{background:linear-gradient(90deg,#6366f1 0%,#a855f7 100%);border-radius:10px;height:100%;transition:width 1s linear}.meta-info{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.tag{color:#475569;background:#f1f5f9;border:1px solid #e2e8f0;border-radius:20px;align-items:center;gap:6px;padding:4px 12px;font-size:.75rem;font-weight:600;display:flex}.question-text{color:#0f172a;letter-spacing:-.01em;margin-bottom:22px;font-size:1.2rem;font-weight:800;line-height:1.5}.options-grid{flex-direction:column;gap:12px;margin-bottom:24px;display:flex}.option-btn{color:#1e293b;text-align:left;cursor:pointer;background:#fff;border:2px solid #e2e8f0;border-radius:16px;align-items:center;gap:16px;padding:14px 20px;font-family:inherit;font-size:.95rem;font-weight:600;transition:all .2s;display:flex;position:relative}.option-btn:hover:not(:disabled){border-color:var(--primary-purple);background:#f8fafc;transform:translateY(-2px);box-shadow:0 8px 20px #6366f11f}.option-letter{text-transform:uppercase;min-width:34px;height:34px;color:var(--primary-purple);background:#f1f5f9;border:1px solid #cbd5e1;border-radius:10px;justify-content:center;align-items:center;font-family:Space Grotesk,sans-serif;font-size:.95rem;font-weight:700;transition:all .2s;display:flex}.option-btn:hover:not(:disabled) .option-letter{background:var(--primary-purple);color:#fff;border-color:var(--primary-purple)}.option-btn.correct{background:var(--correct-bg);border-color:var(--correct-border);color:var(--correct-text);box-shadow:0 4px 14px #10b98126}.option-btn.correct .option-letter{background:var(--correct-border);color:#fff;border-color:var(--correct-border)}.option-btn.incorrect{background:var(--incorrect-bg);border-color:var(--incorrect-border);color:var(--incorrect-text);box-shadow:0 4px 14px #ef444426}.option-btn.incorrect .option-letter{background:var(--incorrect-border);color:#fff;border-color:var(--incorrect-border)}.feedback-card{border-radius:16px;margin-bottom:24px;padding:18px 22px;animation:.3s cubic-bezier(.4,0,.2,1) slideUp}.feedback-card.correct{background:var(--correct-bg);border:1px solid var(--correct-border)}.feedback-card.incorrect{background:var(--incorrect-bg);border:1px solid var(--incorrect-border)}.feedback-title{margin-bottom:6px;font-size:1.05rem;font-weight:800}.feedback-card.correct .feedback-title{color:var(--correct-text)}.feedback-card.incorrect .feedback-title{color:var(--incorrect-text)}.feedback-body{color:#334155;font-size:.92rem;line-height:1.5}.next-btn{color:#fff;cursor:pointer;letter-spacing:.01em;background:linear-gradient(135deg,#6366f1 0%,#8b5cf6 100%);border:none;border-radius:16px;width:100%;padding:16px;font-size:1.05rem;font-weight:700;transition:all .25s;box-shadow:0 8px 20px #6366f159}.next-btn:hover{transform:translateY(-2px);box-shadow:0 12px 25px #6366f180}.analytics-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:24px;display:grid}.stat-card{text-align:center;background:#f8fafc;border:1px solid #e2e8f0;border-radius:18px;padding:18px}.stat-value{color:#0f172a;margin-top:4px;font-family:Space Grotesk,sans-serif;font-size:1.7rem;font-weight:800}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem;font-weight:700}.subjects-section{text-align:left;margin-bottom:24px}.subject-item{margin-bottom:14px}.subject-header{color:#1e293b;justify-content:space-between;margin-bottom:6px;font-size:.88rem;font-weight:600;display:flex}.subject-bar-bg{background:#e2e8f0;border-radius:6px;width:100%;height:8px;overflow:hidden}.subject-bar-fill{background:linear-gradient(90deg,#6366f1 0%,#8b5cf6 100%);border-radius:6px;height:100%}.tts-btn{color:var(--primary-purple);cursor:pointer;background:#f1f5f9;border:1px solid #cbd5e1;border-radius:12px;align-items:center;gap:8px;margin-top:10px;padding:8px 16px;font-size:.82rem;font-weight:700;transition:all .2s;display:inline-flex}.tts-btn:hover{border-color:var(--primary-purple);background:#e0e7ff}.history-section{text-align:left;border-top:1px solid #f1f5f9;margin-top:28px;padding-top:20px}.history-title{color:#0f172a;margin-bottom:14px;font-size:1.1rem;font-weight:800}.history-list{flex-direction:column;gap:10px;max-height:220px;display:flex;overflow-y:auto}.history-item{background:#f8fafc;border:1px solid #e2e8f0;border-radius:14px;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.history-date{color:var(--text-muted);font-size:.78rem}.history-badge{border-radius:8px;padding:4px 12px;font-family:Space Grotesk,sans-serif;font-size:.9rem;font-weight:700}.history-badge.good{background:var(--correct-bg);color:var(--correct-text);border:1px solid var(--correct-border)}.history-badge.bad{background:var(--incorrect-bg);color:var(--incorrect-text);border:1px solid var(--incorrect-border)}.results-screen{text-align:center;padding:16px 0}.score-circle{background:#f0fdf4;border:4px solid #10b981;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;width:140px;height:140px;margin:24px auto;display:flex;box-shadow:0 10px 25px #10b98133}.score-num{color:#065f46;font-family:Space Grotesk,sans-serif;font-size:2.5rem;font-weight:800}.score-label{color:#10b981;text-transform:uppercase;letter-spacing:.05em;font-size:.8rem;font-weight:700}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (width<=640px){body{padding:12px}.app-container{border-radius:20px;min-height:auto;padding:20px 16px}.header{flex-direction:column;align-items:flex-start;gap:12px}.header-controls{flex-wrap:wrap;justify-content:space-between;width:100%}.mode-selector{flex-direction:column;gap:6px}.title{font-size:1.25rem}.question-text{font-size:1.05rem;line-height:1.4}.option-btn{padding:12px 14px;font-size:.88rem}}