@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap";:root{--color-bg: #F9FAFB;--color-surface: #FFFFFF;--color-surface-elevated: #FFFFFF;--color-surface-hover: #F3F4F6;--color-accent: #00E5FF;--color-accent-dim: #A5F3FC;--color-accent-glow: rgba(0, 229, 255, .18);--color-yellow: #FFD400;--color-yellow-dim: #FFF1A6;--color-purple: #C084FC;--color-blue: #60A5FA;--color-coral: #FB7185;--color-onboarding-coral: #FF6B6B;--color-onboarding-peach: #FFCCBC;--color-onboarding-bg: #FFF5F0;--color-text: #111111;--color-text-secondary: #222222;--color-text-dim: #555555;--color-success: #22C55E;--color-error: #EF4444;--color-border: #1a1a2e;--color-border-hover: #1a1a2e;--color-on-accent: #1a1a2e;--color-surface-glass: rgba(255, 255, 255, .92);--color-neon-cyan: #22D3EE;--color-neon-blue: #60A5FA;--color-neon-purple: #A78BFA;--color-neon-pink: #F472B6;--color-neon-green: #34D399;--color-glow-cyan: rgba(34, 211, 238, .2);--color-glow-purple: rgba(167, 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12px rgba(192,132,252,.15);--shadow-nav: 0 -2px 12px rgba(0,0,0,.06);--color-lime: #BFFF00;--color-gold: #FFD700;--color-silver: #C0C0C0;--color-bronze: #CD7F32;--transition-fast: .12s ease;--transition-normal: .18s ease;--transition-spring: .22s cubic-bezier(.2, .9, .3, 1);--nav-height: 82px;--content-gutter: var(--space-5);--content-bottom-safe: calc(var(--nav-height) + var(--space-4))}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html{background-color:var(--color-bg)}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background-color:var(--color-bg);color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;overflow-x:hidden}#root{width:100%;max-width:480px;margin:0 auto;min-height:100vh;position:relative;background-color:var(--color-bg);box-shadow:0 0 40px 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var(--transition-fast)}.neo-btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-float)}.neo-btn:active{transform:translateY(0);box-shadow:var(--shadow-pressed)}.header{position:sticky;top:0;background-color:var(--color-bg);padding:12px 0 16px;z-index:10;margin-bottom:16px}.session-header-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.chapter-name{font-size:1rem;color:var(--color-text);font-weight:700}.session-progress{font-size:.8rem;color:var(--color-text-dim);font-weight:500}.session-progress-bar-container{width:100%;height:8px;background-color:var(--color-surface);border:1.5px solid var(--color-border);border-radius:var(--radius-full);overflow:hidden}.session-progress-bar-fill{height:100%;background:var(--color-yellow);transition:width 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var(--transition-fast);border:1.5px solid var(--color-border);box-shadow:var(--shadow-card)}.solution-toggle-btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-float)}.solution-toggle-btn:active{transform:scale(.98)}.solution-toggle-btn.btn-disabled{opacity:.4;pointer-events:none;filter:grayscale(.5)}.config-total-summary{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;margin-top:16px;margin-bottom:16px;border-radius:var(--radius-md);background:#fff;border:1.5px solid var(--color-border);box-shadow:var(--shadow-card)}.config-total-label{font-size:.9rem;font-weight:700;color:var(--color-text)}.config-total-value{font-size:1.4rem;font-weight:700;color:var(--color-accent);font-variant-numeric:tabular-nums}.config-topic-list{display:flex;flex-direction:column;gap:12px;padding-bottom:100px}.config-topic-item{background:var(--color-surface);border:1.5px solid var(--color-border);border-radius:var(--radius-md);padding:18px 20px;box-shadow:var(--shadow-card);transition:all var(--transition-fast)}.config-topic-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.config-topic-name{font-size:.92rem;font-weight:700;color:var(--color-text)}.config-topic-meta{font-size:.7rem;font-weight:500;color:var(--color-text-dim)}.config-slider-row{display:flex;align-items:center;gap:12px}.config-slider{flex:1;-webkit-appearance:none;appearance:none;height:6px;border-radius:var(--radius-full);border:1.5px solid var(--color-border);background:var(--color-surface-hover);outline:none;transition:background var(--transition-fast)}.config-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:24px;height:24px;border-radius:50%;background:var(--color-yellow);cursor:pointer;border:2px solid var(--color-border);box-shadow:var(--shadow-card);transition:all var(--transition-fast)}.config-slider::-webkit-slider-thumb:active{transform:scale(.95);box-shadow:var(--shadow-pressed)}.config-slider::-moz-range-thumb{width:24px;height:24px;border-radius:50%;background:var(--color-yellow);cursor:pointer;border:2px solid var(--color-border);box-shadow:var(--shadow-card)}.config-percentage-badge{min-width:42px;text-align:center;font-size:.85rem;font-weight:700;color:var(--color-accent);background:var(--color-accent);padding:4px 10px;border-radius:var(--radius-full);border:1.5px solid var(--color-border);font-variant-numeric:tabular-nums}.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:var(--nav-height);background:#ffffffd9;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-top:1px solid rgba(0,0,0,.06);display:flex;justify-content:space-around;align-items:center;z-index:1000;max-width:480px;margin:0 auto;padding-bottom:var(--space-2);box-shadow:var(--shadow-nav)}.nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--color-text-dim);background:transparent;width:68px;gap:var(--space-1);transition:all var(--transition-fast);padding:var(--space-2) 0;position:relative;border-radius:var(--radius-sm);border:none}.nav-item.active{color:var(--color-text)}.nav-item.active:after{content:"";position:absolute;bottom:2px;left:50%;transform:translate(-50%);width:24px;height:3px;background:var(--color-accent);border-radius:var(--radius-full)}.nav-label{font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);letter-spacing:.02em}.icon-container{transition:transform var(--transition-spring);display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--radius-sm)}.nav-item.active .icon-container{transform:translateY(-1px)}.app-content{min-height:100vh;width:100%;padding:var(--content-gutter)}.app-content.with-nav{padding-bottom:var(--content-bottom-safe)}.app-content.no-nav{padding-bottom:var(--space-5)}.onboarding-shell{min-height:100vh;display:flex;flex-direction:column;background:var(--color-bg);padding:20px;position:relative;overflow:hidden}.onboarding-top-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.onboarding-logo{font-size:1.1rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text)}.onboarding-skip{font-weight:700;font-size:.85rem;color:var(--color-text);padding:6px 14px;background:var(--color-surface);border:1.5px solid var(--color-border);border-radius:var(--radius-sm);box-shadow:var(--shadow-card);transition:all var(--transition-fast)}.onboarding-skip:active{transform:translateY(1px);box-shadow:var(--shadow-pressed)}.onboarding-skip:disabled{opacity:.3;pointer-events:none}.onboarding-track-wrap{overflow:hidden;flex:1;display:flex;align-items:center}.onboarding-track{display:flex;width:100%;transition:transform .3s cubic-bezier(.2,.9,.3,1)}.onboarding-slide{min-width:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:20px;padding:20px 16px}.onboarding-illustration{width:130px;height:130px;display:flex;align-items:center;justify-content:center;border:2px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-brutalist);color:#000}.onboarding-slide.active .onboarding-illustration{animation:slideIconIn .4s ease-out}@keyframes slideIconIn{0%{opacity:0;transform:translateY(16px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}.onboarding-slide h1{font-size:1.7rem;line-height:1.15;color:var(--color-text);font-weight:700;text-transform:uppercase;max-width:320px;letter-spacing:-.02em}.onboarding-slide.active h1{animation:slideTextIn .4s ease-out .1s both}.onboarding-slide p{font-size:.95rem;line-height:1.55;color:var(--color-text-secondary);max-width:300px;font-weight:500}.onboarding-slide.active p{animation:slideTextIn .4s ease-out .2s both}@keyframes slideTextIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.onboarding-footer{display:flex;flex-direction:column;align-items:center;gap:18px;padding-top:8px}.onboarding-dots{display:flex;justify-content:center;gap:10px}.onboarding-dot{width:10px;height:10px;background:var(--color-surface-hover);border:1.5px solid var(--color-border);border-radius:var(--radius-full);transition:all .2s ease}.onboarding-dot.active{width:32px;background:var(--color-yellow);box-shadow:var(--shadow-card)}.onboarding-primary-btn{width:100%;background:var(--color-yellow);color:#000;font-size:1rem;font-weight:700;padding:16px;border:1.5px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);text-transform:uppercase;letter-spacing:.04em;transition:all var(--transition-fast)}.onboarding-primary-btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-float)}.onboarding-primary-btn:active{transform:translateY(0);box-shadow:var(--shadow-pressed)}.onboarding-primary-btn:disabled{opacity:.5;pointer-events:none}.onboarding-signin-hint{margin:0;font-size:.78rem;line-height:1.45;color:var(--color-text-dim);text-align:center;max-width:300px;font-weight:500}.onboarding-signin-error{margin:0;width:100%;max-width:320px;padding:12px 14px;font-size:.82rem;line-height:1.45;font-weight:600;color:var(--color-text);text-align:center;background:#ef44441f;border:1.5px solid var(--color-error);border-radius:var(--radius-md)}.student-form-shell{min-height:100vh;display:flex;flex-direction:column;gap:24px;background:var(--color-bg);padding:24px 18px}.student-form-header h1{font-size:1.5rem;line-height:1.2;color:var(--color-text);font-weight:700;text-transform:uppercase}.student-form-header p{margin-top:8px;color:var(--color-text-secondary);line-height:1.45;font-size:.92rem;font-weight:500}.student-form{display:flex;flex-direction:column;gap:18px}.student-form-label{display:flex;flex-direction:column;gap:8px;font-size:.88rem;font-weight:700;color:var(--color-text);text-transform:uppercase;letter-spacing:.04em}.student-form-label input,.student-form-label select{border:1.5px solid var(--color-border);border-radius:var(--radius-sm);background:#fff;height:48px;padding:0 14px;font-size:.95rem;font-weight:500;color:var(--color-text);box-shadow:var(--shadow-card);transition:all var(--transition-fast)}.student-form-label input:focus,.student-form-label select:focus{outline:none;box-shadow:var(--shadow-float);border-color:var(--color-accent)}.student-form-group{display:flex;flex-direction:column;gap:10px;font-size:.88rem;font-weight:700;color:var(--color-text);text-transform:uppercase;letter-spacing:.04em}.pill-grid{display:flex;flex-wrap:wrap;gap:8px}.pill-btn{border:1.5px solid var(--color-border);border-radius:var(--radius-full);background:#fff;color:var(--color-text);padding:8px 16px;font-size:.85rem;font-weight:700;box-shadow:var(--shadow-card);transition:all var(--transition-fast)}.pill-btn:active{transform:translateY(1px);box-shadow:var(--shadow-pressed)}.pill-btn.active{background:var(--color-yellow);border-color:var(--color-border);color:#000;box-shadow:var(--shadow-card)}.student-form-error{color:var(--color-error);font-size:.85rem;font-weight:600;margin-top:2px}.student-form-submit{margin-top:8px;background:var(--color-accent);color:#000;font-size:1rem;font-weight:700;padding:16px;border:1.5px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);text-transform:uppercase;letter-spacing:.04em;transition:all var(--transition-fast)}.student-form-submit:hover{transform:translateY(-1px);box-shadow:var(--shadow-float)}.student-form-submit:active{transform:translateY(0);box-shadow:var(--shadow-pressed)}.student-form-submit:disabled{opacity:.4;pointer-events:none}.student-form-cancel{background:#fff;color:#000;font-size:1rem;font-weight:700;padding:14px;border:1.5px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);text-transform:uppercase;letter-spacing:.04em;transition:all var(--transition-fast)}.student-form-cancel:hover{transform:translateY(-1px);box-shadow:var(--shadow-float)}.student-form-cancel:active{transform:translateY(0);box-shadow:var(--shadow-pressed)}.leaderboard-screen{padding-bottom:20px}.leaderboard-title{font-size:1.5rem;font-weight:700;text-transform:uppercase;letter-spacing:-.02em;margin-bottom:4px}.leaderboard-subtitle{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-weight:500;margin-bottom:16px}.leaderboard-tabs{display:flex;gap:var(--space-2);padding:var(--space-1);background:#fff;border:1.5px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);margin-bottom:16px}.leaderboard-tab{flex:1;padding:10px;font-size:var(--font-size-sm);font-weight:700;color:var(--color-text-dim);text-transform:uppercase;letter-spacing:.04em;transition:all var(--transition-fast);border-radius:var(--radius-sm)}.leaderboard-tab.active{background:var(--color-yellow);color:#000;border:1.5px solid var(--color-border);box-shadow:var(--shadow-card)}.leaderboard-loading,.leaderboard-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:60px 20px;text-align:center;border:1.5px dashed var(--color-border);border-radius:var(--radius-md);background:#fff;box-shadow:var(--shadow-card)}.leaderboard-empty h3{font-size:var(--font-size-lg);font-weight:700;text-transform:uppercase}.leaderboard-empty p{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.leaderboard-table-wrap{border:1.5px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-brutalist);background:#fff;overflow:hidden}.leaderboard-table{width:100%;border-collapse:collapse;font-size:var(--font-size-sm)}.leaderboard-table thead{background:var(--color-border);color:#fff}.leaderboard-table th{padding:10px 12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;font-size:.7rem;text-align:left;white-space:nowrap}.leaderboard-table td{padding:12px;border-bottom:1px solid rgba(0,0,0,.06);vertical-align:middle}.leaderboard-table tbody tr:last-child td{border-bottom:none}.leaderboard-table tbody tr.is-you{background:var(--color-accent);font-weight:700}.leaderboard-table tbody tr.top-1 td:first-child{color:#000;font-weight:700}.leaderboard-table tbody tr.top-1{background:#fff9db}.leaderboard-table tbody tr.top-2{background:#f0f0f0}.leaderboard-table tbody tr.top-3{background:#fef0e6}.col-rank{width:40px;text-align:center!important;font-weight:700;font-size:.9rem}.col-name{min-width:120px}.table-name{display:block;font-weight:700;font-size:.88rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:160px}.table-meta{display:block;font-size:.65rem;color:var(--color-text-dim);text-transform:uppercase;letter-spacing:.04em;font-weight:500;margin-top:2px}.col-cards{width:60px;text-align:center!important;font-weight:700;font-size:1rem}.col-speed{width:70px;text-align:right!important;font-weight:600;font-size:.8rem;color:var(--color-text-secondary)}.profile-screen{padding:0 0 var(--content-bottom-safe) 0;display:flex;flex-direction:column;gap:var(--space-5)}.profile-hero{display:flex;flex-direction:column;align-items:center;gap:var(--space-3);padding:var(--space-8) var(--space-5) var(--space-5);background:var(--color-yellow);border-bottom:3px solid var(--color-border)}.profile-avatar{width:80px;height:80px;border-radius:50%;border:3px solid var(--color-border);box-shadow:var(--shadow-card);background:#fff;display:flex;align-items:center;justify-content:center;color:var(--color-text-dim)}.profile-name{font-size:var(--font-size-xl);font-weight:800;text-transform:uppercase;letter-spacing:-.02em;text-align:center;color:var(--color-text)}.profile-trinity-badge{background:var(--color-text);color:var(--color-yellow);font-size:var(--font-size-xs);font-weight:800;text-transform:uppercase;letter-spacing:.08em;padding:4px 12px;border-radius:var(--radius-sm)}.profile-card{margin:0 var(--space-5);border:2px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);background:var(--color-card);display:flex;flex-direction:column;overflow:hidden}.profile-row{display:flex;align-items:flex-start;gap:var(--space-3);padding:var(--space-4);border-bottom:1px solid var(--color-border-light)}.profile-row:last-child{border-bottom:none}.profile-row>svg{flex-shrink:0;margin-top:2px;color:var(--color-text-dim)}.profile-row>div{display:flex;flex-direction:column;gap:2px}.profile-label{font-size:var(--font-size-xs);font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-dim)}.profile-value{font-size:var(--font-size-md);font-weight:600;color:var(--color-text)}.profile-subjects{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}.profile-subject-pill{border:2px solid var(--color-border);background:var(--color-accent-dim);font-size:var(--font-size-xs);font-weight:700;text-transform:uppercase;letter-spacing:.04em;padding:4px 10px;border-radius:var(--radius-sm);color:var(--color-text)}.profile-edit-btn{margin:0 var(--space-5);background:var(--color-accent);color:var(--color-text);font-size:var(--font-size-md);font-weight:800;padding:var(--space-4);border:2px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);text-transform:uppercase;letter-spacing:.04em;display:flex;align-items:center;justify-content:center;gap:var(--space-2);cursor:pointer;transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.profile-edit-btn:active{transform:scale(.98);box-shadow:none}