:root,[data-theme=dark]{--bg: #0a0a0c;--bg-elevated: #101013;--panel: #131316;--panel-raised: #1a1a1e;--panel-hover: #1f1f24;--line: #26262b;--line-soft: #1c1c20;--text: #f0f0f2;--text-muted: #92929c;--text-faint: #5c5c66;--accent: #5eead4;--accent-2: #a78bfa;--accent-dim: #2b7a6c;--accent-soft: rgba(94, 234, 212, .1);--gradient: linear-gradient(135deg, #5eead4 0%, #a78bfa 100%);--due: #f5b155;--danger: #f0715a;--danger-soft: rgba(240, 113, 90, .12);--success: #6ee7a0;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 8px 24px rgba(0, 0, 0, .35);--shadow-glow: 0 0 0 1px rgba(94, 234, 212, .15), 0 8px 24px rgba(94, 234, 212, .08);--mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;--sans: "Inter", -apple-system, "Segoe UI", sans-serif;color-scheme:dark}[data-theme=light]{--bg: #f7f7f8;--bg-elevated: #ffffff;--panel: #ffffff;--panel-raised: #ffffff;--panel-hover: #f0f0f2;--line: #e4e4e8;--line-soft: #ececef;--text: #17171a;--text-muted: #63636d;--text-faint: 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ease}.btn:hover{border-color:var(--text-muted);background:var(--panel-hover)}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}.btn-accent{border-color:var(--accent-dim);color:var(--accent);background:var(--accent-soft)}.btn-accent:hover{border-color:var(--accent)}.btn-gradient{border:none;background:var(--gradient);color:#04120f;font-weight:600;box-shadow:var(--shadow-glow)}.btn-gradient:hover{filter:brightness(1.05)}.field{width:100%;background:var(--bg-elevated);border:1px solid var(--line);border-radius:7px;padding:10px 12px;font-size:14px}.field:focus{border-color:var(--accent-dim)}.mono{font-family:var(--mono)}.tag-pill{font-family:var(--mono);font-size:11px;padding:2px 8px;border:1px solid var(--line);border-radius:999px;color:var(--text-muted);white-space:nowrap;background:var(--panel-raised)}.badge-easy{color:var(--success);border-color:var(--success)}.badge-medium{color:var(--due);border-color:var(--due)}.badge-hard{color:var(--danger);border-color:var(--danger)}.progress-track{height:6px;border-radius:999px;background:var(--line-soft);overflow:hidden}.progress-fill{height:100%;background:var(--gradient);border-radius:999px;transition:width .3s ease}@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}.variant-accordions{display:none}@media (max-width: 640px){.variant-tabs,.variant-tab-panel{display:none!important}.variant-accordions{display:block}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes riseIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.97)}to{opacity:1;transform:scale(1)}}@keyframes shimmer{0%{background-position:-200% 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