:root {
  --bg: #0d1015;
  --bg-soft: #151a23;
  --panel: rgba(20, 25, 34, .94);
  --panel-2: rgba(255,255,255,.04);
  --text: #eff4f8;
  --muted: #97a4b3;
  --line: rgba(255,255,255,.08);
  --accent: #7dd3fc;
  --accent-2: #60a5fa;
  --success: #86efac;
  --error: #fca5a5;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #1d2533 0%, var(--bg) 45%);
}

.shell {
  width: min(1320px, calc(100% - 32px));
  margin: 28px auto 54px;
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
  grid-template-areas:
    "main side"
    "result side";
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, .22);
  backdrop-filter: blur(12px);
}

.panel-main { grid-area: main; }
.panel-side { grid-area: side; }
.panel-result { grid-area: result; }

.kicker {
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 10px;
}

h1, h2, h3, p { margin-top: 0; }
h1 {
  font-size: 36px;
  line-height: 1.02;
  margin-bottom: 12px;
}
h2 {
  font-size: 24px;
  margin-bottom: 0;
}
h3 {
  font-size: 18px;
  margin-bottom: 14px;
}

.lede, .hint, .empty-state, .history-empty { color: var(--muted); }
.stack { display: grid; gap: 18px; }
.grid { display: grid; gap: 16px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

label span {
  display: block;
  font-size: 14px;
  color: #d9e2ea;
  margin-bottom: 8px;
}

input, select, textarea, button {
  font: inherit;
}

input, select, textarea {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.1);
  background: var(--bg-soft);
  color: var(--text);
  padding: 13px 14px;
}

textarea {
  min-height: 104px;
  resize: vertical;
}

button {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  cursor: pointer;
  transition: transform .12s ease, opacity .12s ease;
}

button:hover { transform: translateY(-1px); }
button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #07111a;
  font-weight: 700;
}
button.ghost {
  background: rgba(255,255,255,.07);
  color: var(--text);
}
button.danger {
  background: rgba(239, 68, 68, .16);
  color: #fecaca;
}
button.hidden, .hidden { display: none; }

.toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.status {
  margin-top: 18px;
  padding: 13px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--muted);
}
.status[data-tone="success"] { color: var(--success); border-color: rgba(134,239,172,.26); }
.status[data-tone="error"] { color: var(--error); border-color: rgba(252,165,165,.26); }

.side-head, .result-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.badge {
  min-width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(125, 211, 252, .14);
  color: var(--accent);
  font-weight: 700;
}

.history-list {
  display: grid;
  gap: 12px;
}

.history-item {
  width: 100%;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  text-align: left;
  padding: 10px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
  color: var(--text);
}

.history-item.active {
  border-color: rgba(125, 211, 252, .4);
  background: rgba(125, 211, 252, .08);
}

.history-item img {
  width: 72px;
  height: 56px;
  object-fit: cover;
  border-radius: 12px;
  display: block;
}

.history-item strong {
  display: block;
  font-size: 14px;
  margin-bottom: 4px;
}

.history-item span {
  display: block;
  font-size: 12px;
  color: var(--muted);
}

.preview-box {
  aspect-ratio: 16 / 9;
  border-radius: 20px;
  overflow: hidden;
  background: #0a0d12;
  border: 1px solid var(--line);
  margin-bottom: 18px;
}

.preview-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.meta-card,
.snippet-card,
.variant-card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
}

.meta-card strong {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.meta-card span {
  word-break: break-word;
}

.snippet-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.snippet-card label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
}

.snippet-card button {
  margin-top: 8px;
}

.variants-block {
  margin-top: 22px;
}

.variant-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.variant-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 14px;
}

@media (max-width: 1120px) {
  .shell {
    grid-template-columns: 1fr;
    grid-template-areas:
      "main"
      "side"
      "result";
  }
}

@media (max-width: 760px) {
  .grid.two,
  .grid.three,
  .meta-grid,
  .snippet-grid,
  .variant-list {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 30px;
  }

  .shell {
    width: min(100%, calc(100% - 20px));
    margin: 12px auto 28px;
  }

  .panel {
    padding: 18px;
  }
}