postcard/style.css

/* Self-hosted (fonts/caveat-latin.woff2, SIL OFL — see fonts/OFL.txt) so
   the caption webfont doesn't depend on fonts.googleapis.com at runtime. */
@font-face {
  font-family: 'Caveat';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('fonts/caveat-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122;
}

:root {
  --bg:           #0c0a08;
  --bg-alt:       #14100c;
  --text:         #cbc3b8;
  --muted:        #6b6258;
  --heading:      #f2e9dc;
  --accent:       #d9873f;
  --accent-dim:   rgba(217, 135, 63, 0.12);
  --accent-border:rgba(217, 135, 63, 0.28);
  --border:       rgba(255, 245, 230, 0.08);
  --shadow:       0 0 0 1px rgba(255,255,255,0.04), 0 4px 24px rgba(0,0,0,0.6);
  --error:        #ff6b6b;
  --error-dim:    rgba(255, 107, 107, 0.14);

  --mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', ui-monospace, monospace;
  --sans: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;

  font: 16px/1.6 var(--sans);
  color: var(--text);
  background: var(--bg);
  color-scheme: dark;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

body { margin: 0; }

#app {
  width: 640px;
  max-width: 100%;
  margin: 0 auto;
  padding: 32px 16px 64px;
}

h1, h2, h3 { font-family: var(--mono); color: var(--heading); line-height: 1.15; margin: 0 0 0.5em; }
p { margin: 0; }

/* ── Header ─────────────────────────────────────────────────────────── */

.header-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 8px;
}

.header-row h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  text-align: center;
  margin: 0;
}

.header-row h1::before {
  content: '> ';
  color: var(--muted);
  font-weight: 400;
}

.hint {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  margin-bottom: 32px;
}

/* ── Card ───────────────────────────────────────────────────────────── */

.card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  background: var(--bg-alt);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}

/* ── Drop zone ──────────────────────────────────────────────────────── */

.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 48px 16px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  cursor: pointer;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}

.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent-border);
  background: var(--accent-dim);
}

.drop-zone-label {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text);
}

.source-row {
  justify-content: center;
  margin-top: 16px;
}

.drop-zone-sub {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}

/* ── Canvas ─────────────────────────────────────────────────────────── */

.canvas-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
  border-radius: 8px;
  overflow: hidden;
  background: #000;
}

#canvas {
  max-width: 100%;
  max-height: 60vh;
  display: block;
  touch-action: none;
}

#canvas.pannable { cursor: grab; }
#canvas.pannable.panning { cursor: grabbing; }

.pan-hint {
  text-align: center;
  font-size: 12px;
  color: var(--text-dim, #888);
  margin: -12px 0 20px;
}

/* ── Controls ───────────────────────────────────────────────────────── */

.controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.control-value {
  color: var(--accent);
  text-transform: none;
  letter-spacing: normal;
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preset-btn {
  font-family: var(--mono);
  font-size: 12px;
  padding: 8px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s;
}

.preset-btn:hover { border-color: var(--accent-border); }

.preset-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent-border);
  color: var(--accent);
}

/* ── Caption input ──────────────────────────────────────────────────── */

.caption-input {
  width: 100%;
  resize: vertical;
  font-family: var(--sans);
  font-size: 14px;
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}

.caption-input:focus {
  outline: none;
  border-color: var(--accent-border);
}

/* ── Inline rows ────────────────────────────────────────────────────── */

.inline-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* ── Actions / buttons ──────────────────────────────────────────────── */

.actions-row {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s;
  letter-spacing: 0.01em;
}

.btn:hover { border-color: var(--accent-border); color: var(--heading); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: default; transform: none; }

.btn-small {
  font-size: 11px;
  padding: 6px 10px;
  align-self: flex-start;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  font-weight: 700;
}

.btn-primary:hover { background: #e59a53; border-color: #e59a53; color: #000; }

/* ── Result panel ───────────────────────────────────────────────────── */

.result-panel {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text);
  text-align: center;
}

.result-panel a {
  color: var(--accent);
  word-break: break-all;
}

.result-panel.error { color: var(--error); border-color: var(--error-dim); }