/* Color Picker Pro — style.css */

/* ── Tokens ─────────────────────────────────────────────────────────────────── */

:root {
  --bg:        #1a1a2e;
  --surface:   #16213e;
  --surface2:  #0f3460;
  --text:      #e0e0e0;
  --text-dim:  #888;
  --accent:    #e94560;
  --radius:    8px;
  --radius-sm: 4px;
  --shadow:    0 2px 12px rgba(0,0,0,.45);
  --pass-bg:   #1a3a1a;
  --pass-fg:   #4caf50;
  --fail-bg:   #3a1a1a;
  --fail-fg:   #f44336;
  --transition: 0.15s ease;
}

[data-theme="light"] {
  --bg:        #f4f4f8;
  --surface:   #ffffff;
  --surface2:  #e8e8f0;
  --text:      #1a1a2e;
  --text-dim:  #666;
  --shadow:    0 2px 12px rgba(0,0,0,.12);
  --pass-bg:   #e6f4ea;
  --pass-fg:   #2e7d32;
  --fail-bg:   #fce8e6;
  --fail-fg:   #c62828;
}

/* ── Reset ──────────────────────────────────────────────────────────────────── */

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

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
}

a { color: var(--accent); text-decoration: none; }

/* ── Layout ─────────────────────────────────────────────────────────────────── */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--surface2);
  flex-wrap: wrap;
  gap: 8px;
}

.app-header h1 { font-size: 1.2rem; font-weight: 700; letter-spacing: -.5px; }
.app-header .subtitle { font-size: .75rem; color: var(--text-dim); }

.header-controls { display: flex; gap: 8px; align-items: center; }

.main-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 16px;
  padding: 16px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

@media (max-width: 760px) {
  .main-grid { grid-template-columns: 1fr; }
  .app-header { padding: 10px 16px; }
}

/* ── Cards ──────────────────────────────────────────────────────────────────── */

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.card h2 {
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-dim);
  margin-bottom: 12px;
  border-bottom: 1px solid var(--surface2);
  padding-bottom: 6px;
}

/* ── Preview ─────────────────────────────────────────────────────────────────── */

.preview-block {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

#preview-swatch {
  width: 80px;
  height: 80px;
  border-radius: var(--radius);
  border: 2px solid rgba(255,255,255,.1);
  flex-shrink: 0;
  transition: background var(--transition);
}

.preview-inputs {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#preview-hex {
  font-size: 1.1rem;
  font-weight: 700;
  font-family: 'Fira Code', monospace;
  letter-spacing: .05em;
}

.hex-row {
  display: flex;
  gap: 6px;
  align-items: center;
}

#hex-input {
  background: var(--surface2);
  border: 1px solid var(--surface2);
  color: var(--text);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-family: monospace;
  font-size: .9rem;
  width: 120px;
  outline: none;
  transition: border-color var(--transition);
}

#hex-input:focus { border-color: var(--accent); }

#native-picker {
  width: 36px;
  height: 28px;
  padding: 2px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--surface2);
  cursor: pointer;
}

/* ── Buttons ─────────────────────────────────────────────────────────────────── */

.btn {
  background: var(--surface2);
  border: 1px solid transparent;
  color: var(--text);
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: .82rem;
  transition: background var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn:hover { background: var(--accent); color: #fff; }
.btn:disabled { opacity: .4; cursor: not-allowed; }

.btn-icon { padding: 5px 10px; font-size: 1rem; }

/* ── Space tabs ──────────────────────────────────────────────────────────────── */

.space-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 14px;
}

.space-tabs .btn {
  font-size: .75rem;
  padding: 3px 10px;
}

.space-tabs .btn.active {
  background: var(--accent);
  color: #fff;
}

/* ── Sliders ─────────────────────────────────────────────────────────────────── */

#slider-container { display: flex; flex-direction: column; gap: 10px; }

.slider-row { display: flex; flex-direction: column; gap: 4px; }
.slider-row label { font-size: .78rem; color: var(--text-dim); }

.slider-track-wrap { display: flex; gap: 8px; align-items: center; }

input[type="range"] {
  -webkit-appearance: none;
  flex: 1;
  height: 8px;
  border-radius: 4px;
  background: var(--track-bg, var(--surface2));
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--accent);
  box-shadow: 0 1px 4px rgba(0,0,0,.4);
  cursor: grab;
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--accent);
  cursor: grab;
}

.slider-val {
  min-width: 48px;
  text-align: right;
  font-size: .78rem;
  font-family: monospace;
  color: var(--text-dim);
}

/* ── Formats ─────────────────────────────────────────────────────────────────── */

#formats-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.format-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface2);
  border-radius: var(--radius-sm);
  padding: 5px 8px;
}

.format-label {
  font-size: .7rem;
  text-transform: uppercase;
  color: var(--text-dim);
  min-width: 44px;
  letter-spacing: .06em;
}

.format-value {
  flex: 1;
  font-size: .8rem;
  font-family: 'Fira Code', monospace;
  word-break: break-all;
}

.btn-copy {
  background: transparent;
  border: 1px solid var(--surface2);
  color: var(--text-dim);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: .72rem;
  transition: all var(--transition);
  flex-shrink: 0;
}

.btn-copy:hover, .btn-copy.copied {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ── Harmony ─────────────────────────────────────────────────────────────────── */

.harmony-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.harmony-controls select {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--surface2);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: .82rem;
  cursor: pointer;
  outline: none;
  flex: 1;
}

#harmony-swatches {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.harmony-swatch {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform var(--transition), border-color var(--transition);
  box-shadow: var(--shadow);
}

.harmony-swatch:hover {
  transform: scale(1.1);
  border-color: var(--accent);
}

/* ── Contrast ────────────────────────────────────────────────────────────────── */

.contrast-row {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px solid var(--surface2);
  flex-wrap: wrap;
}

.contrast-row:last-child { border-bottom: none; }

.contrast-label { font-size: .8rem; color: var(--text-dim); min-width: 90px; }
.contrast-value { font-family: monospace; font-size: .88rem; font-weight: 600; }

.wcag-badge {
  font-size: .72rem;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 600;
  letter-spacing: .04em;
}

.wcag-badge.pass { background: var(--pass-bg); color: var(--pass-fg); }
.wcag-badge.fail { background: var(--fail-bg); color: var(--fail-fg); }

/* ── Color Blindness ─────────────────────────────────────────────────────────── */

#cb-swatches {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.cb-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.cb-swatch {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,.12);
}

.cb-label { font-size: .68rem; color: var(--text-dim); text-align: center; }

/* ── Recent colors ───────────────────────────────────────────────────────────── */

.recent-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

#recent-colors {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.recent-swatch {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition);
}

.recent-swatch:hover {
  transform: scale(1.15);
  border-color: var(--accent);
}

/* ── Right column stack ──────────────────────────────────────────────────────── */

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

/* ── Eyedropper ──────────────────────────────────────────────────────────────── */

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