:root{color-scheme:light;--bg: #f4f4f5;--surface: #ffffff;--surface-muted: #fafafa;--border: #e4e4e7;--border-strong: #d4d4d8;--text: #18181b;--text-muted: #52525b;--text-subtle: #71717a;--accent: #2563eb;--accent-strong: #1d4ed8;--accent-soft: #eff6ff;--segmented-bg: #f4f4f5;--segmented-active-bg: #ffffff;--segmented-active-shadow: 0 1px 3px rgba(0, 0, 0, .12);--danger: #b91c1c;--toast-bg: #18181b;--toast-text: #ffffff;--code-bg: #f6f7f9;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;line-height:1.5;color:var(--text);background:var(--bg)}html[data-theme=dark]{color-scheme:dark;--bg: #0f1115;--surface: #181b22;--surface-muted: #14171d;--border: #2a2f3a;--border-strong: #3a4150;--text: #e6e8ec;--text-muted: #b1b7c2;--text-subtle: #8a92a3;--accent: #60a5fa;--accent-strong: #3b82f6;--accent-soft: rgba(96, 165, 250, .16);--segmented-bg: #0f1115;--segmented-active-bg: #232833;--segmented-active-shadow: 0 1px 3px rgba(0, 0, 0, .4);--danger: #f87171;--toast-bg: #232833;--toast-text: #e6e8ec;--code-bg: #14171d}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);transition:background .2s ease,color .2s ease}.app{max-width:1200px;margin:0 auto;padding:24px 20px 40px}.header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap}.header__main h1{margin:0 0 4px;font-size:1.75rem}.subtitle{margin:0;color:var(--text-muted)}.header__theme{flex-shrink:0}.layout{display:grid;grid-template-columns:1fr 280px;grid-template-rows:auto auto;gap:16px;margin-top:20px}.panel{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px;transition:background .2s ease,border-color .2s ease}.panel h2{margin:0;font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-subtle)}.panel-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.inline-label{display:flex;align-items:center;gap:8px;font-size:.875rem;color:var(--text-muted)}.inline-label select{font:inherit;padding:4px 8px;border-radius:6px;border:1px solid var(--border-strong);background:var(--surface);color:var(--text)}.input{width:100%;min-height:320px;resize:vertical;border:1px solid var(--border-strong);border-radius:8px;padding:12px;font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;background:var(--surface-muted);color:var(--text)}.input:focus{outline:2px solid var(--accent);outline-offset:-1px}.sidebar{display:flex;flex-direction:column;gap:16px}.profile-slot{margin-top:12px}.segmented{display:flex;background:var(--segmented-bg);border:1px solid var(--border);padding:3px;gap:2px}.segmented--rounded{border-radius:8px}.segmented--pill,.segmented--pill .segmented__option{border-radius:999px}.segmented--rounded .segmented__option{border-radius:6px}.segmented__option{flex:1;padding:.45rem .6rem;border:none;background:transparent;color:var(--text-muted);font-size:.88rem;font-family:inherit;font-weight:500;cursor:pointer;transition:background .15s ease,color .15s ease,box-shadow .15s ease;text-align:center;white-space:nowrap}.segmented__option:hover:not(.segmented__option--active){color:var(--text)}.segmented__option--active{background:var(--segmented-active-bg);color:var(--text);box-shadow:var(--segmented-active-shadow)}.checkbox{display:flex;align-items:flex-start;gap:8px;margin-top:10px;font-size:.9rem;color:var(--text)}.copy-button{width:100%;padding:12px 16px;border:none;border-radius:8px;background:var(--accent);color:#fff;font:inherit;font-weight:600;cursor:pointer;transition:background .15s ease}.copy-button:hover{background:var(--accent-strong)}.preview-panel{grid-column:1 / -1}.preview{min-height:180px;padding:12px;border:1px solid var(--border);border-radius:8px;background:var(--surface-muted);overflow:auto;color:var(--text)}.preview pre,.preview code{background:var(--code-bg);color:var(--text)}.preview a{color:var(--accent)}.preview-empty{margin:0;color:var(--text-subtle)}.footer{margin-top:20px;text-align:center;font-size:.875rem;color:var(--text-subtle)}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%);padding:10px 16px;border-radius:8px;background:var(--toast-bg);color:var(--toast-text);font-size:.9rem;box-shadow:0 8px 24px #0000002e}.toast--error{background:var(--danger);color:#fff}@media(max-width:860px){.layout{grid-template-columns:1fr}}