:root{color-scheme:light dark;--bg: #f8f7f4;--surface: #ffffff;--text: #1a1a1a;--text-muted: #5c5c5c;--border: #e4e0d8;--accent: #2d5a4a;--accent-hover: #1e4336;--shadow: 0 1px 3px rgba(0, 0, 0, .06);--radius: 12px;--font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif}@media(prefers-color-scheme:dark){:root{--bg: #121212;--surface: #1c1c1c;--text: #f0f0f0;--text-muted: #a0a0a0;--border: #333333;--accent: #6db89a;--accent-hover: #8fd4b8;--shadow: 0 1px 3px rgba(0, 0, 0, .3)}}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased}.app{max-width:36rem;margin:0 auto;padding:1.25rem 1rem 3rem}.header{margin-bottom:1.5rem}.header__title{font-size:1.5rem;font-weight:600;margin:0 0 .25rem}.header__counts{font-size:.875rem;color:var(--text-muted);margin:0}.controls{display:flex;flex-direction:column;gap:.75rem;margin-bottom:1.5rem}.controls__row{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}.search{width:100%;padding:.75rem 1rem;font-size:1rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text)}.search:focus{outline:2px solid var(--accent);outline-offset:2px}.toggle{display:flex;align-items:center;gap:.5rem;font-size:.875rem;color:var(--text-muted);cursor:pointer}.btn{padding:.625rem 1rem;font-size:.875rem;font-weight:500;border:none;border-radius:8px;background:var(--accent);color:#fff;cursor:pointer;transition:background .15s}@media(prefers-color-scheme:dark){.btn{color:#121212}}.btn:hover:not(:disabled){background:var(--accent-hover)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--secondary{background:transparent;color:var(--accent);border:1px solid var(--border)}.btn--secondary:hover:not(:disabled){background:var(--border)}.btn--ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn--ghost:hover:not(:disabled){color:var(--text);background:var(--border)}.list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:1rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.25rem;box-shadow:var(--shadow)}.card--mastered{opacity:.65}.card--review{text-align:center;padding:2rem 1.25rem}.card__header{display:flex;flex-wrap:wrap;align-items:baseline;gap:.5rem 1rem;margin-bottom:.5rem}.card__lemma{font-size:1.75rem;font-weight:600;margin:0;line-height:1.2}.card__date{font-size:.75rem;color:var(--text-muted)}.card__meaning{margin:0 0 .75rem;color:var(--text-muted)}.card__examples{margin:0 0 1rem;padding-left:1.25rem;font-size:.9375rem}.card__examples li{margin-bottom:.25rem}.card__actions{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin-top:1rem}.status{text-align:center;color:var(--text-muted);padding:2rem}.status--error{color:#c0392b}@media(prefers-color-scheme:dark){.status--error{color:#e74c3c}}