:root {
    --bg: #0c0f14;
    --surface: #141820;
    --surface2: #1c2230;
    --border: #252d3d;
    --accent: #4fffb0;
    --accent2: #00c4ff;
    --accent3: #ff6b6b;
    --text: #e8edf5;
    --muted: #6b7a99;
    --nav-h: 62px;
    --radius: 12px;
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
  }

  /* ── NAV ── */
  /* nav {
    position: sticky; top: 0; z-index: 100;
    height: var(--nav-h);
    background: rgba(12,15,20,.88);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center;
    padding: 0 clamp(1rem,4vw,2.5rem);
    gap: 1.5rem;
  }
  .logo {
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.02em;
    color: var(--accent);
    text-decoration: none;
    display: flex; align-items: center; gap: .45rem;
    flex-shrink: 0;
  }
  .logo span { color: var(--text); }
  .nav-links { display: flex; gap: 1.4rem; margin-left: auto; }
  .nav-links a {
    color: var(--muted); text-decoration: none;
    font-size: .875rem; font-weight: 500;
    transition: color .2s;
  }
  .nav-links a:hover { color: var(--text); }
  .btn {
    display: inline-flex; align-items: center; gap: .4rem;
    background: var(--accent); color: #000;
    font-family: 'Space Mono', monospace;
    font-size: .78rem; font-weight: 700;
    padding: .5rem 1.1rem; border-radius: 6px;
    border: none; cursor: pointer; text-decoration: none;
    transition: opacity .15s, transform .12s;
    white-space: nowrap;
  }*/
  .btn:hover { opacity: .88; transform: translateY(-1px); }
  .btn:active { transform: translateY(0); }
  .btn.secondary {
    background: transparent; color: var(--accent);
    border: 1.5px solid var(--accent);
  }
  .btn.secondary:hover { background: rgba(79,255,176,.08); }

  /* ── HERO ── */
  .hero {
    text-align: center;
    padding: 4rem clamp(1rem,5vw,2rem) 3rem;
    position: relative; overflow: hidden;
  }
  .hero::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse 70% 55% at 50% 0%, rgba(79,255,176,.07) 0%, transparent 70%);
    pointer-events: none;
  }
  .badge {
    display: inline-flex; align-items: center; gap: .4rem;
    background: rgba(79,255,176,.1); border: 1px solid rgba(79,255,176,.25);
    color: var(--accent); font-family: 'Space Mono', monospace;
    font-size: .72rem; padding: .28rem .8rem; border-radius: 99px;
    margin-bottom: 1.2rem; letter-spacing: .04em;
  }
  .hero h1 {
    font-family: 'Space Mono', monospace;
    font-size: clamp(1.6rem, 4vw, 2.6rem);
    font-weight: 700; line-height: 1.2;
    letter-spacing: -.03em;
    margin-bottom: .8rem;
  }
  .hero h1 em { font-style: normal; color: var(--accent); }
  .hero p {
    color: var(--muted); max-width: 540px; margin: 0 auto 2rem;
    font-size: 1rem; font-weight: 300;
  }

  /* ── LAYOUT ── */
  .main-wrap {
    max-width: 1100px; margin: 0 auto;
    padding: 0 clamp(1rem,4vw,2rem) 5rem;
  }

  /* ── TABS ── */
  .schema-types {
    display: flex; flex-wrap: wrap; gap: .5rem;
    margin-bottom: 2rem;
  }
  .type-tab {
    padding: .4rem 1rem; border-radius: 6px;
    border: 1.5px solid var(--border);
    background: transparent; color: var(--muted);
    font-family: 'Space Mono', monospace;
    font-size: .75rem; cursor: pointer;
    transition: all .18s; display: flex; align-items: center; gap: .35rem;
  }
  .type-tab:hover { border-color: var(--accent); color: var(--text); }
  .type-tab.active {
    border-color: var(--accent); background: rgba(79,255,176,.1);
    color: var(--accent);
  }
  .type-tab .dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: currentColor; flex-shrink: 0;
  }

  /* ── GRID ── */
  .generator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  @media (max-width: 760px) {
    .generator-grid { grid-template-columns: 1fr; }
  }

  /* ── PANEL ── */
  .panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
  }
  .panel-head {
    padding: .85rem 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: .6rem;
    font-family: 'Space Mono', monospace;
    font-size: .78rem; font-weight: 700;
    letter-spacing: .03em; color: var(--muted);
    text-transform: uppercase;
  }
  .panel-head .dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent); flex-shrink: 0;
  }
  .panel-body { padding: 1.4rem 1.25rem; }

  /* ── FORM ELEMENTS ── */
  .input-group { margin-bottom: 1.1rem; }
  .input-group label {
    display: block; margin-bottom: .35rem;
    font-size: .8rem; font-weight: 500; color: var(--muted);
    letter-spacing: .02em;
  }
  .input-group input,
  .input-group select,
  .input-group textarea {
    width: 100%;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 7px; color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: .88rem; padding: .6rem .9rem;
    outline: none; transition: border-color .18s;
    -webkit-appearance: none;
  }
  .input-group textarea { resize: vertical; min-height: 72px; }
  .input-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7a99' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right .75rem center;
    padding-right: 2.2rem; cursor: pointer;
  }
  .input-group input:focus,
  .input-group select:focus,
  .input-group textarea:focus { border-color: var(--accent); }
  .input-group input::placeholder,
  .input-group textarea::placeholder { color: #3a4460; }

  .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
  @media (max-width: 480px) { .two-col { grid-template-columns: 1fr; } }

  .rating-row { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: .75rem; }

  /* ── GENERATE BTN ── */
  .gen-btn-wrap { margin-top: 1.4rem; }
  .gen-btn {
    width: 100%;
    background: var(--accent); color: #000;
    font-family: 'Space Mono', monospace;
    font-size: .82rem; font-weight: 700;
    padding: .78rem 1rem; border-radius: 8px;
    border: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center; gap: .5rem;
    transition: opacity .15s, transform .12s;
    letter-spacing: .02em;
  }
  .gen-btn:hover { opacity: .88; transform: translateY(-1px); }
  .gen-btn:active { transform: translateY(0); }

  /* ── OUTPUT ── */
  .output-panel { display: flex; flex-direction: column; }
  .output-panel .panel-body {
    flex: 1; display: flex; flex-direction: column; gap: 1rem;
  }
  .code-wrap {
    flex: 1; position: relative;
    background: #0a0d12;
    border: 1px solid var(--border);
    border-radius: 8px; overflow: hidden;
  }
  .code-wrap pre {
    font-family: 'Space Mono', monospace;
    font-size: .75rem; line-height: 1.65;
    color: #a8c4a2; padding: 1.1rem;
    overflow: auto; height: 100%; min-height: 320px;
    max-height: 520px;
    white-space: pre-wrap; word-break: break-word;
  }
  .code-wrap .placeholder-txt {
    color: #2a3348; font-style: italic;
  }
  .line-num { color: #2d3a55; user-select: none; }

  /* Syntax coloring */
  .tok-brace { color: #7ec8c8; }
  .tok-key { color: #9fb4ff; }
  .tok-str { color: #a8c4a2; }
  .tok-num { color: #ffb86c; }
  .tok-type { color: var(--accent); }
  .tok-url { color: var(--accent2); }

  .output-actions {
    display: flex; gap: .6rem; flex-wrap: wrap;
  }
  .output-actions .btn { flex: 1; justify-content: center; font-size: .78rem; }

  /* ── PREVIEW BADGE ── */
  .preview-badge {
    display: inline-flex; align-items: center; gap: .35rem;
    font-size: .72rem; color: var(--muted);
    font-family: 'Space Mono', monospace;
    margin-bottom: .3rem;
  }
  .preview-badge .status {
    width: 7px; height: 7px; border-radius: 50%;
    background: #3a4460;
  }
  .preview-badge.ready .status { background: var(--accent); }

  /* ── FEATURES ── */
  .features-section {
    margin-top: 4rem;
  }
  .section-label {
    font-family: 'Space Mono', monospace;
    font-size: .72rem; letter-spacing: .1em;
    color: var(--accent); text-transform: uppercase;
    margin-bottom: .6rem;
  }
  .section-title {
    font-family: 'Space Mono', monospace;
    font-size: clamp(1.2rem, 2.5vw, 1.6rem);
    font-weight: 700; margin-bottom: .6rem;
    letter-spacing: -.02em;
  }
  .section-sub {
    color: var(--muted); font-weight: 300;
    max-width: 420px; margin-bottom: 2.5rem;
  }
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1rem;
  }
  .feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.4rem 1.25rem;
    transition: border-color .2s, transform .2s;
    position: relative; overflow: hidden;
  }
  .feature-card::before {
    content: '';
    position: absolute; inset: 0;
    opacity: 0;
    background: radial-gradient(circle at 30% 30%, rgba(79,255,176,.05), transparent 60%);
    transition: opacity .3s;
  }
  .feature-card:hover { border-color: rgba(79,255,176,.3); transform: translateY(-2px); }
  .feature-card:hover::before { opacity: 1; }
  .feature-card .icon {
    font-size: 1.6rem; margin-bottom: .75rem;
    display: block;
  }
  .feature-card h3 {
    font-family: 'Space Mono', monospace;
    font-size: .88rem; font-weight: 700;
    margin-bottom: .4rem; letter-spacing: -.01em;
  }
  .feature-card p { color: var(--muted); font-size: .85rem; font-weight: 300; }

  /* ── FOOTER ── */
  footer {
    border-top: 1px solid var(--border);
    padding: 1.4rem clamp(1rem,4vw,2.5rem);
    text-align: center;
    color: var(--muted); font-size: .8rem;
    display: flex; align-items: center; justify-content: center; gap: .5rem;
    flex-wrap: wrap;
  }
  footer a { color: var(--accent); text-decoration: none; }
  footer .sep { color: var(--border); }

  /* ── TOAST ── */
  .toast {
    position: fixed; bottom: 1.5rem; right: 1.5rem;
    background: var(--accent); color: #000;
    font-family: 'Space Mono', monospace;
    font-size: .75rem; font-weight: 700;
    padding: .6rem 1.2rem; border-radius: 8px;
    transform: translateY(80px); opacity: 0;
    transition: all .3s cubic-bezier(.34,1.56,.64,1);
    pointer-events: none; z-index: 999;
  }
  .toast.show { transform: translateY(0); opacity: 1; }

  /* ── SCHEMA FORM SECTIONS ── */
  .schema-form { display: none; }
  .schema-form.active { display: block; }

  /* ── SCROLLBAR ── */
  ::-webkit-scrollbar { width: 5px; height: 5px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }