/* ── Pattergen Studio — Shared Stylesheet ── */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=DM+Mono:wght@300;400;500&display=swap');

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

/* ── THEME ── */
:root {
  --bg: #0d0d0d;
  --surface: #141414;
  --surface2: #1c1c1c;
  --border: #272727;
  --text: #e0dbd5;
  --muted: #4a4a4a;
  --ink: #b0aca6;
  --accent: #e8683a;
  --accent-dark: #c4562a;
  --accent-dim: rgba(232,104,58,0.1);
}

/* ── BASE ── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Mono', monospace;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── HEADER ── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 50px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
}

.logo {
  font-family: 'Instrument Serif', serif;
  font-size: 21px;
  letter-spacing: 0.02em;
  color: var(--text);
}

.logo em { font-style: italic; color: var(--accent); }

.tagline {
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ── LAYOUT ── */
.main { display: flex; flex: 1; overflow: hidden; }

aside {
  width: 252px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.preview-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  overflow: hidden;
  padding: 28px;
}

.preview-frame {
  line-height: 0;
  overflow: hidden;
  box-shadow: 0 0 0 1px var(--border), 0 12px 60px rgba(0,0,0,0.7);
}

#preview-svg { display: block; }

/* ── SIDEBAR SECTIONS ── */
.section {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.section-label {
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 11px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── COLOR ROWS ── */
.color-rows { display: flex; flex-direction: column; gap: 6px; }

.color-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface2);
  transition: border-color 0.15s;
}

.color-row:hover { border-color: #383838; }

.color-row-label {
  font-size: 10px;
  color: var(--ink);
  letter-spacing: 0.06em;
  width: 52px;
  flex-shrink: 0;
}

.color-row-num {
  font-size: 9px;
  color: var(--muted);
  width: 12px;
  text-align: center;
  flex-shrink: 0;
}

.swatch-wrap {
  position: relative;
  width: 24px;
  height: 24px;
  border-radius: 3px;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 1px 4px rgba(0,0,0,0.5);
  cursor: pointer;
}

.swatch-preview {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.swatch-wrap input[type="color"] {
  position: absolute;
  inset: -4px;
  width: calc(100% + 8px);
  height: calc(100% + 8px);
  border: none;
  padding: 0;
  cursor: pointer;
  opacity: 0;
}

.color-hex {
  font-size: 11px;
  color: var(--ink);
  letter-spacing: 0.06em;
  flex: 1;
}

.color-remove {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  font-size: 13px;
  line-height: 1;
  padding: 2px 4px;
  border-radius: 2px;
  transition: color 0.15s, background 0.15s;
  flex-shrink: 0;
}

.color-remove:hover { color: var(--accent); background: var(--accent-dim); }
.color-remove:disabled { opacity: 0.15; cursor: not-allowed; }

.btn-add-color {
  width: 100%;
  padding: 7px;
  border: 1px dashed var(--border);
  background: none;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 4px;
  margin-top: 7px;
  transition: border-color 0.15s, color 0.15s;
}

.btn-add-color:hover { border-color: var(--accent); color: var(--accent); }
.btn-add-color:disabled { opacity: 0.2; cursor: not-allowed; }

/* ── COMPLEMENTARY BUTTON ── */
.btn-comp {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 6px;
  border-radius: 3px;
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.15s, color 0.15s;
}

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

/* ── TOGGLE ── */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.toggle-label { font-size: 11px; color: var(--ink); }

.toggle { position: relative; width: 38px; height: 21px; }
.toggle input { opacity: 0; width: 0; height: 0; }

.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 21px;
  cursor: pointer;
  transition: background 0.2s;
}

.toggle input:checked + .toggle-track { background: var(--accent); }

.toggle-track::after {
  content: '';
  position: absolute;
  left: 3px; top: 3px;
  width: 15px; height: 15px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
  transition: transform 0.2s;
}

.toggle input:checked + .toggle-track::after { transform: translateX(17px); }

/* ── SLIDERS ── */
.slider-group { display: flex; flex-direction: column; gap: 14px; }
.slider-wrap { display: flex; flex-direction: column; gap: 7px; }

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.slider-name {
  font-size: 10px;
  color: var(--ink);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.slider-val {
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
}

a:link, a:visited, a:hover, a:active {
    text-decoration: none;
    color: inherit;
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--surface);
  box-shadow: 0 0 0 1px var(--accent-dark);
  cursor: pointer;
  transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }

/* ── CANVAS SIZE INPUTS ── */
.size-row { display: flex; gap: 8px; align-items: flex-end; }
.size-input-wrap { flex: 1; display: flex; flex-direction: column; gap: 5px; }

.size-label {
  font-size: 9px;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
}

.size-input {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--surface2);
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
}

.size-input:focus { border-color: var(--accent); }

.size-x {
  font-size: 12px;
  color: var(--muted);
  padding-bottom: 7px;
  flex-shrink: 0;
}

/* ── BUTTONS ── */
.btn-row {
  display: flex;
  gap: 7px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.btn-row:last-child { margin-top: auto; }

.btn-randomize {
  width: 100%;
  padding: 10px;
  background: var(--accent);
  color: #fff;
  border: none;
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 3px;
  transition: background 0.15s, transform 0.1s;
}

.btn-randomize:hover { background: var(--accent-dark); }
.btn-randomize:active { transform: scale(0.98); }

.btn-randomize-all {
  width: 100%;
  padding: 10px;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 3px;
  transition: background 0.15s, color 0.15s, transform 0.1s;
}

.btn-randomize-all:hover { background: var(--accent-dim); }
.btn-randomize-all:active { transform: scale(0.98); }

.btn-jumble {
  width: 100%;
  padding: 10px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border);
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 3px;
  transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.1s;
}

.btn-jumble:hover { border-color: var(--ink); color: var(--text); }
.btn-jumble:active { transform: scale(0.98); }

.btn-secondary {
  flex: 1;
  padding: 10px;
  background: var(--surface2);
  color: var(--ink);
  border: 1px solid var(--border);
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 3px;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.btn-secondary:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* ── APP-SPECIFIC ── */

/* Polka Dots: hide second color section when 2-color is off */
#section-polka2.hidden { display: none; }