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8px);right:0;background:var(--surface);border-radius:12px;box-shadow:var(--shadow-pop);border:1px solid var(--border);min-width:210px;padding:6px;z-index:200;animation:dropdown-fade .15s ease}.user-menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:9px 11px;border-radius:8px;color:var(--text);text-decoration:none;font-weight:500;font-size:13.5px;line-height:1.2;letter-spacing:-.005em;transition:background .15s ease,color .15s ease;background:none;border:none;cursor:pointer;text-align:left}.user-menu-item:hover{background:var(--hover-bg-strong)}.user-menu-icon{flex-shrink:0;width:16px;height:16px;opacity:.7}.user-menu-item.logout-item{color:var(--hard-fg)}.user-menu-item.logout-item:hover{background:var(--danger-bg)}.user-menu-divider{height:1px;background:var(--border);margin:6px}.theme-toggle{padding:4px 10px;border:1px solid var(--border);border-radius:6px;background:var(--surface);color:var(--text-muted);font-size:12px;font-weight:600;cursor:pointer;transition:all .2s ease}.theme-toggle:hover{border-color:var(--border-emphasis);color:var(--text-strong);background:var(--surface-soft)}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:30px;height:26px;padding:0}.main-content{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior-y:contain;-webkit-overflow-scrolling:touch;padding:0 48px 32px;max-width:1400px;margin:0 auto;width:100%}@media (max-width: 900px){.navbar{padding:0 24px}.navbar-menu{margin-left:24px;gap:4px}.nav-link{padding:8px 12px;font-size:14px}.main-content{padding:0 24px 24px}}@media (max-width: 768px){:root{--navbar-height: 48px}.navbar{padding:0 16px;min-height:var(--navbar-height);flex-wrap:nowrap;gap:8px}.navbar-brand a{font-size:18px}.navbar-logo{width:32px;height:32px}.navbar-menu{display:none}.navbar-hamburger{display:inline-flex}.navbar-user{gap:8px}.username{display:none}.main-content{padding:0 16px 16px}}@media (max-width: 480px){.navbar{padding:0 12px}.navbar-brand a{font-size:16px;gap:8px}.navbar-logo{width:28px;height:28px}.username-btn{padding:6px 10px;font-size:13px}.navbar-hamburger{width:36px;height:36px}.navbar-user{gap:6px}.main-content{padding:0 12px 12px}}:root{color-scheme:light;--bg: #ffffff;--bg-soft: #f8fafc;--surface: #ffffff;--surface-soft: #f8fafc;--surface-strong: #f1f5f9;--navbar-bg: rgba(255, 255, 255, .85);--navbar-height: 52px;--border: #e2e8f0;--border-strong: #cbd5e1;--border-emphasis: #0f172a;--text: #0f172a;--text-strong: #0f172a;--text-muted: #475569;--text-subtle: #64748b;--text-faint: #94a3b8;--accent: #0f172a;--accent-hover: #1e293b;--accent-fg: #ffffff;--hover-bg: rgba(15, 23, 42, .05);--hover-bg-strong: #f1f5f9;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);--shadow-md: 0 2px 20px rgba(15, 23, 42, .06);--shadow-lg: 0 12px 48px -16px rgba(15, 23, 42, .08);--shadow-pop: 0 10px 40px rgba(15, 23, 42, .15);--easy-bg: #e6f7f5;--easy-fg: #00857a;--easy-border: #99e3db;--medium-bg: #fff5e6;--medium-fg: #b87500;--medium-border: #ffd39d;--hard-bg: #fdecec;--hard-fg: #c02c29;--hard-border: #f9b8b7;--success-bg: #f0fdf4;--success-fg: #166534;--success-border: #bbf7d0;--danger-bg: #fef2f2;--danger-fg: #991b1b;--danger-border: #fecaca;--focus-ring: rgba(15, 23, 42, .06)}:root[data-theme=dark]{color-scheme:dark;--bg: #18181b;--bg-soft: #1f1f23;--surface: #27272a;--surface-soft: #2e2e33;--surface-strong: #3f3f46;--navbar-bg: rgba(15, 15, 17, .92);--border: #2e2e33;--border-strong: #3f3f46;--border-emphasis: #f4f4f5;--text: #fafafa;--text-strong: #ffffff;--text-muted: #d4d4d8;--text-subtle: #a1a1aa;--text-faint: #71717a;--accent: #fafafa;--accent-hover: #e4e4e7;--accent-fg: #18181b;--hover-bg: rgba(250, 250, 250, .06);--hover-bg-strong: #3f3f46;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);--shadow-md: 0 2px 20px rgba(0, 0, 0, .45);--shadow-lg: 0 12px 48px -16px rgba(0, 0, 0, .7);--shadow-pop: 0 10px 40px rgba(0, 0, 0, .55);--easy-bg: rgba(0, 184, 163, .12);--easy-fg: #2dd4bf;--easy-border: rgba(45, 212, 191, .3);--medium-bg: rgba(255, 184, 0, .12);--medium-fg: #fbbf24;--medium-border: rgba(251, 191, 36, .3);--hard-bg: rgba(239, 71, 67, .14);--hard-fg: #f87171;--hard-border: rgba(248, 113, 113, .3);--success-bg: rgba(34, 197, 94, .12);--success-fg: #4ade80;--success-border: rgba(74, 222, 128, .3);--danger-bg: rgba(239, 71, 67, .12);--danger-fg: #f87171;--danger-border: rgba(248, 113, 113, .3);--focus-ring: rgba(250, 250, 250, .12)}*{margin:0;padding:0;box-sizing:border-box;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg);color:var(--text);transition:background-color .18s ease,color .18s 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.btn-primary:hover{background-color:var(--accent-hover);border-color:var(--accent-hover);color:var(--accent-fg)!important;box-shadow:0 4px 12px #0006}:root[data-theme=dark] a.btn-primary,:root[data-theme=dark] a.btn-primary:hover{color:var(--accent-fg)!important}.btn-secondary{background-color:var(--surface);color:var(--text-muted);border:1px solid var(--border)}.btn-secondary:hover{background-color:var(--surface-soft);border-color:var(--border-strong);color:var(--text)}.btn-success{background-color:#475569;color:#fff;border:1px solid #475569}.btn-success:hover{background-color:#334155;border-color:#334155}.btn-danger{background-color:#64748b;color:#fff;border:1px solid #64748b}.btn-danger:hover{background-color:#475569;border-color:#475569}.btn-warning{background-color:#94a3b8;color:#fff;border:1px solid #94a3b8}.btn-warning:hover{background-color:#64748b;border-color:#64748b}.form-group{margin-bottom:18px}.form-group label{display:block;margin-bottom:8px;font-weight:500;color:var(--text)}.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:14px;background:var(--surface);color:var(--text);transition:all .2s ease}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--border-emphasis);box-shadow:0 0 0 3px var(--focus-ring)}.card{background:var(--surface);border-radius:16px;padding:24px;margin-bottom:0;box-shadow:var(--shadow-pop);border:1px solid var(--border)}.error{color:var(--text);font-size:14px;margin-top:8px;padding:12px 16px;background-color:var(--danger-bg);border:1px solid var(--danger-border);border-radius:8px}.success{color:var(--text);font-size:14px;margin-top:8px;padding:12px 16px;background-color:var(--success-bg);border:1px solid var(--success-border);border-radius:8px}.loading{text-align:center;padding:40px;color:var(--text-subtle)}.badge{display:inline-block;padding:4px 10px;border-radius:6px;font-size:12px;font-weight:500}.badge-easy{background-color:var(--easy-bg);color:var(--easy-fg);border:1px solid var(--easy-border)}.badge-medium{background-color:var(--medium-bg);color:var(--medium-fg);border:1px solid var(--medium-border)}.badge-hard{background-color:var(--hard-bg);color:var(--hard-fg);border:1px solid var(--hard-border)}.badge-todo{background-color:var(--surface-strong);color:var(--text-muted);border:1px solid var(--border)}.badge-done{background-color:var(--success-bg);color:var(--success-fg);border:1px solid var(--success-border)}.badge-missed{background-color:var(--danger-bg);color:var(--danger-fg);border:1px solid var(--danger-border)}:root[data-theme=dark] .panel,:root[data-theme=dark] .form-card,:root[data-theme=dark] .problems-toolbar,:root[data-theme=dark] .reviews-empty,:root[data-theme=dark] 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