/* ===========================================================
   md2html web · estilo de la propia herramienta (no del output)
   =========================================================== */
:root {
  --bg: #0e1018;
  --bg-soft: #161a26;
  --panel: #1a1f2e;
  --panel-2: #212840;
  --border: #2b3350;
  --text: #e8ecf6;
  --muted: #9aa6c4;
  --accent: #6d8bff;
  --accent-2: #c061ff;
  --accent-3: #38e0c8;
  --good: #2ecc71;
  --danger: #ff5d6c;
  --radius: 16px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}
body.light {
  --bg: #f4f6fc;
  --bg-soft: #eef1fa;
  --panel: #ffffff;
  --panel-2: #f4f6fc;
  --border: #dde3f2;
  --text: #161a26;
  --muted: #5b6685;
  --shadow: 0 18px 50px rgba(60, 80, 160, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: 0.9em; }

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(109, 139, 255, 0.18), transparent 60%),
    radial-gradient(1000px 500px at 100% 0%, rgba(192, 97, 255, 0.14), transparent 55%),
    linear-gradient(transparent 0, var(--bg) 70%);
  pointer-events: none;
}

/* ---------- header ---------- */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(16px, 5vw, 56px);
  max-width: 1280px;
  margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark {
  font-family: var(--mono);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  padding: 4px 8px;
  border-radius: 8px;
  font-size: 0.85rem;
}
.header-links { display: flex; align-items: center; gap: 18px; }
.header-links a { color: var(--muted); font-weight: 500; }
.header-links a:hover { color: var(--text); }

.ghost-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 7px 12px;
  cursor: pointer;
  font: inherit;
  transition: 0.18s;
}
.ghost-btn:hover { border-color: var(--accent); background: var(--panel-2); }
.ghost-btn.small { padding: 4px 10px; font-size: 0.82rem; }

/* ---------- hero ---------- */
.hero {
  max-width: 920px;
  margin: 30px auto 18px;
  padding: 0 clamp(16px, 5vw, 56px);
  text-align: center;
}
.hero-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--accent-3);
  border: 1px solid var(--border);
  background: rgba(56, 224, 200, 0.08);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(1.9rem, 5vw, 3.1rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -1px;
  margin: 0 0 14px;
}
.grad { background: linear-gradient(120deg, var(--accent), var(--accent-3)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.grad2 { background: linear-gradient(120deg, var(--accent-2), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { color: var(--muted); font-size: 1.05rem; max-width: 720px; margin: 0 auto; }
.hero-sub code { color: var(--accent-3); }

/* ---------- app grid ---------- */
.app {
  max-width: 1280px;
  margin: 28px auto;
  padding: 0 clamp(16px, 5vw, 56px);
  display: grid;
  grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.controls { padding: 18px; display: flex; flex-direction: column; gap: 14px; }

/* dropzone */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: 14px;
  padding: 26px 18px;
  text-align: center;
  cursor: pointer;
  transition: 0.2s;
  background: var(--panel-2);
}
.dropzone:hover, .dropzone:focus-visible { border-color: var(--accent); outline: none; }
.dropzone.dragover {
  border-color: var(--accent-3);
  background: rgba(56, 224, 200, 0.08);
  transform: scale(1.01);
}
.dz-icon { font-size: 2rem; }
.dz-title { font-weight: 600; margin: 8px 0 2px; }
.dz-or { color: var(--muted); font-size: 0.9rem; margin: 0 0 12px; }
.dz-or .link { color: var(--accent); text-decoration: underline; }
.file-status {
  display: flex; align-items: center; justify-content: center;
  gap: 10px; flex-wrap: wrap; margin-top: 8px;
}
.fname { font-family: var(--mono); font-size: 0.85rem; word-break: break-all; }
.badge {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-size: 0.78rem; font-weight: 600;
  padding: 2px 10px; border-radius: 999px;
}

/* groups */
.group {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel-2);
  overflow: hidden;
}
.group > summary {
  cursor: pointer;
  padding: 12px 14px;
  font-weight: 600;
  list-style: none;
  user-select: none;
}
.group > summary::-webkit-details-marker { display: none; }
.group[open] > summary { border-bottom: 1px solid var(--border); }
.group-body { padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.hint { color: var(--muted); font-size: 0.82rem; margin: -2px 0 4px; }

.switch { display: flex; align-items: center; gap: 10px; cursor: pointer; font-size: 0.92rem; }
.switch input { width: 18px; height: 18px; accent-color: var(--accent); cursor: pointer; }
.switch code { color: var(--accent-3); }

.field { display: flex; flex-direction: column; gap: 4px; font-size: 0.82rem; color: var(--muted); }
.field input {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 11px;
  font: inherit;
}
.field input:focus { outline: none; border-color: var(--accent); }

/* theme grid */
.theme-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.theme-chip {
  display: flex; align-items: center; gap: 9px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
  background: var(--bg-soft);
  transition: 0.16s;
  font-size: 0.85rem;
  color: var(--text);
  text-align: left;
}
.theme-chip:hover { border-color: var(--accent); }
.theme-chip.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(109, 139, 255, 0.35) inset;
  color: var(--text);
}
.theme-chip span { color: inherit; }
.swatch { width: 18px; height: 18px; border-radius: 5px; flex: 0 0 auto; border: 1px solid rgba(0,0,0,0.2); }

/* actions */
.actions { display: flex; gap: 10px; }
.primary-btn, .secondary-btn {
  flex: 1; border: none; border-radius: 11px;
  padding: 12px 14px; font: inherit; font-weight: 600; cursor: pointer;
  transition: 0.18s;
}
.primary-btn { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; }
.primary-btn:hover:not(:disabled) { filter: brightness(1.08); transform: translateY(-1px); }
.secondary-btn { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
.secondary-btn:hover:not(:disabled) { border-color: var(--accent); }
.primary-btn:disabled, .secondary-btn:disabled { opacity: 0.45; cursor: not-allowed; }

.toast {
  margin: 0; text-align: center; font-size: 0.85rem; font-weight: 600;
  color: var(--good); transition: 0.2s;
}

/* preview */
.preview { display: flex; flex-direction: column; min-height: 540px; overflow: hidden; }
.preview-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; border-bottom: 1px solid var(--border);
  background: var(--panel-2);
}
.dots { display: flex; gap: 6px; }
.dots i { width: 11px; height: 11px; border-radius: 50%; background: var(--border); }
.dots i:nth-child(1){ background:#ff5f57; } .dots i:nth-child(2){ background:#febc2e; } .dots i:nth-child(3){ background:#28c840; }
.preview-title { color: var(--muted); font-size: 0.85rem; font-weight: 600; }
.preview-bar .ghost-btn { margin-left: auto; }
#preview-frame { flex: 1; width: 100%; border: 0; background: #fff; min-height: 540px; }
.preview-empty {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; color: var(--muted); padding: 40px 24px; gap: 6px;
}
.pe-icon { font-size: 2.6rem; }
.pe-sub { font-size: 0.85rem; opacity: 0.8; }

/* howto */
.howto { max-width: 1280px; margin: 50px auto; padding: 0 clamp(16px, 5vw, 56px); }
.howto h2 { font-size: 1.6rem; text-align: center; margin-bottom: 24px; letter-spacing: -0.5px; }
.howto-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
}
.card h3 { margin: 0 0 12px; font-size: 1.05rem; }
.card pre {
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px; overflow-x: auto; margin: 0 0 12px;
}
.card pre code { font-size: 0.82rem; line-height: 1.5; color: var(--text); }
.card p { color: var(--muted); font-size: 0.9rem; margin: 0; }
.card ul { color: var(--muted); font-size: 0.9rem; margin: 0; padding-left: 18px; }
.card code { color: var(--accent-3); }

/* footer */
.site-footer {
  text-align: center; color: var(--muted); font-size: 0.88rem;
  padding: 30px 20px 50px; border-top: 1px solid var(--border); margin-top: 40px;
}

/* responsive */
@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .preview { min-height: 460px; }
  #preview-frame { min-height: 460px; }
}