/* RPR Customizer — minimal utilitarian styling. Polish in v2. */

:root {
  --bg: #14110f;
  --bg-card: #1f1c19;
  --fg: #e8e4dc;
  --fg-muted: #9a9489;
  --accent: #c8956d;
  --border: #2e2a25;
  --primary: #6b8a4e;
  --primary-hover: #82a662;
  --error: #c75450;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
  margin: 0;
  padding: 0;
  line-height: 1.5;
}

header {
  text-align: center;
  padding: 2rem 1rem 1rem;
  border-bottom: 1px solid var(--border);
}

header h1 {
  margin: 0;
  font-size: 2.5rem;
  letter-spacing: 0.4em;
  font-weight: 300;
}

.tagline {
  color: var(--accent);
  margin: 0.25rem 0;
  font-style: italic;
}

.founder {
  color: var(--fg-muted);
  font-size: 0.85rem;
  margin: 0.5rem 0 0;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card h2 {
  margin-top: 0;
  font-size: 1.4rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.hidden { display: none !important; }

label {
  display: block;
  margin-bottom: 1rem;
}

label > span {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
  color: var(--fg-muted);
}

.row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.row label {
  flex: 1;
  min-width: 140px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
textarea,
select {
  width: 100%;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.55rem 0.75rem;
  font-size: 1rem;
  font-family: inherit;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--primary);
}

input[type="checkbox"] {
  margin-right: 0.4rem;
}

label.checkbox {
  display: flex;
  align-items: center;
  margin: 0.5rem 0;
}

.help {
  font-size: 0.8rem;
  color: var(--fg-muted);
  margin: 0.25rem 0 1rem;
}

.help a { color: var(--accent); }

button {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.7rem 1.2rem;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 0.5rem;
  font-family: inherit;
}

button:hover { background: var(--border); }

button.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--bg);
  font-weight: 600;
}

button.primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }

button:disabled { opacity: 0.5; cursor: wait; }

.button-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.callout {
  background: var(--bg);
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

fieldset {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem;
  margin-bottom: 1rem;
}

fieldset legend {
  padding: 0 0.5rem;
  color: var(--accent);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ─── Pattern display ─── */

.pattern-display {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1rem 0;
}

@media (min-width: 600px) {
  .pattern-display { grid-template-columns: 2fr 1fr; }
}

#pattern_img {
  width: 100%;
  max-width: 100%;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: #000;
}

.pattern-meta p { margin: 0.25rem 0; }

.palette {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}

.swatch {
  width: 60px;
  height: 60px;
  border-radius: 4px;
  border: 2px solid var(--border);
  position: relative;
  cursor: pointer;
  transition: transform 0.1s, border-color 0.1s, opacity 0.1s;
}

.swatch:hover {
  transform: scale(1.05);
}

.swatch.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent);
}

.swatch.deselected {
  opacity: 0.3;
  filter: grayscale(0.6);
}

.swatch.deselected::after {
  content: "✕";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--fg);
  font-size: 1.4rem;
  font-weight: 700;
  text-shadow: 0 0 3px var(--bg);
}

.swatch.added {
  border-style: dashed;
}

.swatch:hover .swatch-tip {
  display: block;
}

.swatch-tip {
  display: none;
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.1rem 0.4rem;
  font-size: 0.7rem;
  border-radius: 3px;
  white-space: nowrap;
  z-index: 10;
}

.palette-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0.5rem 0 1rem;
  flex-wrap: wrap;
}

.add-color {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
}

.add-color input[type="color"] {
  width: 50px;
  height: 36px;
  padding: 2px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
}

.add-color button {
  margin-top: 0;
  padding: 0.4rem 0.8rem;
  font-size: 0.9rem;
}

#palette_summary {
  margin: 0;
}

/* ─── Loading ─── */

.loading {
  text-align: center;
  padding: 2rem;
}

.spinner {
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  margin: 0 auto 1rem;
  animation: spin 0.9s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.signature {
  margin-top: 2rem;
  font-style: italic;
  color: var(--accent);
}

.error {
  color: var(--error);
  background: rgba(199, 84, 80, 0.1);
  border-left: 3px solid var(--error);
  padding: 0.5rem 0.75rem;
  margin: 1rem 0;
}