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

:root {
  --bg: #0d0d0f;
  --bg2: #141417;
  --bg3: #1b1b1f;
  --border: rgba(255,255,255,0.07);
  --border2: rgba(255,255,255,0.13);
  --text: #e8e8e8;
  --text2: #888;
  --text3: #555;
  --accent: #c00;
  --accent2: #ff3333;
  --label: #ffffff;
  --preview-bg: #080808;
  --radius: 8px;
  --radius-lg: 12px;
  --logo-filter: none;
}

[data-theme="light"] {
  --bg: #f0f0f2;
  --bg2: #ffffff;
  --bg3: #e8e8ec;
  --border: rgba(0,0,0,0.08);
  --border2: rgba(0,0,0,0.15);
  --text: #1a1a1f;
  --text2: #555;
  --text3: #999;
  --accent: #c00;
  --accent2: #ff3333;
  --label: #1a1a1f;
  --preview-bg: #1a1a1f;
  --radius: 8px;
  --radius-lg: 12px;
  --logo-filter: brightness(0);
}

html { font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Rajdhani', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: background 0.2s, color 0.2s;
}

header {
  width: 100%;
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg2);
  transition: background 0.2s;
}

.logo-mark {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-mark img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  filter: var(--logo-filter);
  transition: filter 0.2s;
}

.header-text { flex: 1; }

header h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--label);
}

header span {
  font-size: 13px;
  color: var(--label);
  font-weight: 700;
  letter-spacing: 0.03em;
}

.theme-toggle {
  margin-left: auto;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border2);
  background: var(--bg3);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: all 0.15s;
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--text2); }

main {
  width: 100%;
  max-width: 860px;
  padding: 2rem 1.5rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1rem;
  transition: background 0.2s, border-color 0.2s;
}

.panel-title {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--label);
  font-weight: 700;
  margin-bottom: 1rem;
}

.name-input {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-family: 'Rajdhani', sans-serif;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  outline: none;
  letter-spacing: 0.03em;
  transition: border-color 0.15s, background 0.2s, color 0.2s;
}
.name-input::placeholder { color: var(--text3); }
.name-input:focus { border-color: var(--text2); }

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

.mode-btn {
  padding: 8px 18px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  background: var(--bg3);
  color: var(--text2);
  cursor: pointer;
  transition: all 0.15s;
}
.mode-btn:hover { color: var(--text); }
.mode-btn.active {
  background: var(--bg);
  color: var(--text);
  border-color: var(--text2);
}

.preset-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.preset-btn {
  padding: 6px 14px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg3);
  cursor: pointer;
  transition: transform 0.1s, border-color 0.15s;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.preset-btn:hover { transform: scale(1.04); border-color: var(--border2); }

.color-stops-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.color-stops-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
  justify-content: center;
}

.add-stop-row {
  display: flex;
  justify-content: center;
}

.color-stop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.color-stop-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--label);
  font-weight: 700;
  text-transform: uppercase;
}

.color-stop input[type="color"] {
  width: 48px;
  height: 48px;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 3px;
  background: var(--bg3);
}

.color-stop input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-stop input[type="color"]::-webkit-color-swatch { border: none; border-radius: 5px; }

.remove-btn {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--border2);
  background: var(--bg3);
  color: var(--text3);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: all 0.15s;
}
.remove-btn:hover { color: var(--accent2); border-color: var(--accent2); }

.add-stop-btn {
  height: 48px;
  padding: 0 16px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.05em;
  border: 1px dashed var(--border2);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  align-self: flex-end;
  transition: all 0.15s;
}
.add-stop-btn:hover { color: var(--text); border-color: var(--text2); }
.add-stop-btn:disabled { opacity: 0.3; cursor: not-allowed; }

.preview-panel {
  background: var(--preview-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  margin-bottom: 1rem;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: background 0.2s;
}

.preview-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(255,255,255,0.012) 3px,
    rgba(255,255,255,0.012) 4px
  );
  pointer-events: none;
}

.preview-label {
  position: absolute;
  top: 8px;
  left: 12px;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #ffffff;
  font-weight: 700;
  font-family: 'Share Tech Mono', monospace;
}

#preview-text {
  font-family: 'Share Tech Mono', monospace;
  font-size: 26px;
  letter-spacing: 0.05em;
  text-align: center;
  word-break: break-all;
  position: relative;
  z-index: 1;
}

.output-panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 1rem;
  transition: background 0.2s;
}

.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}

.output-header-label {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--label);
  font-weight: 700;
}

.copy-btn {
  padding: 5px 16px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  background: var(--bg3);
  color: var(--text2);
  cursor: pointer;
  transition: all 0.15s;
}
.copy-btn:hover { color: var(--text); border-color: var(--text2); }
.copy-btn.copied { color: #4caf50; border-color: #4caf50; }

.output-code {
  padding: 14px 16px;
  font-family: 'Share Tech Mono', monospace;
  font-size: 12px;
  color: var(--text2);
  word-break: break-all;
  line-height: 1.7;
  max-height: 180px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border2) transparent;
}

.gradient-bar {
  height: 6px;
  border-radius: 3px;
  margin-bottom: 1rem;
  transition: background 0.2s;
}

footer {
  width: 100%;
  border-top: 1px solid var(--border);
  padding: 0.9rem 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg2);
  margin-top: auto;
  transition: background 0.2s;
}

footer span {
  font-size: 12px;
  color: var(--label);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-family: 'Share Tech Mono', monospace;
}

.size-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.size-label {
  font-size: 11px;
  color: var(--label);
  font-weight: 700;
  letter-spacing: 0.06em;
  min-width: 24px;
  text-align: center;
}

#size-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--border2);
  outline: none;
  cursor: pointer;
}

#size-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text);
  cursor: pointer;
  border: 2px solid var(--border2);
  transition: background 0.15s;
}

#size-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--text);
  cursor: pointer;
  border: 2px solid var(--border2);
}

@media (max-width: 600px) {
  header { padding: 1rem; }
  main { padding: 1rem 1rem 2rem; }
  #preview-text { font-size: 18px; }
}

.stop-swatch {
  width: 48px;
  height: 48px;
  border: 2px solid var(--border2);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s, transform 0.1s;
}
.stop-swatch:hover {
  border-color: var(--text2);
  transform: scale(1.06);
}

#colour-picker {
  display: none;
  position: fixed;
  z-index: 9999;
  background: #1b1b1f;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  padding: 10px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6);
  width: 240px;
  flex-direction: column;
  gap: 8px;
}

#sv-canvas {
  display: block;
  width: 220px;
  height: 160px;
  border-radius: 6px;
  cursor: crosshair;
  margin-bottom: 8px;
}

#hue-canvas {
  display: block;
  width: 220px;
  height: 16px;
  border-radius: 8px;
  cursor: crosshair;
  margin-bottom: 8px;
}

.picker-bottom {
  display: flex;
  align-items: center;
  gap: 8px;
}

#picker-preview {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.15);
  flex-shrink: 0;
}

#picker-hex-input {
  flex: 1;
  background: #0d0d0f;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 6px;
  color: #e8e8e8;
  font-family: 'Share Tech Mono', monospace;
  font-size: 13px;
  padding: 6px 8px;
  outline: none;
  letter-spacing: 0.05em;
  transition: border-color 0.15s;
}
#picker-hex-input:focus { border-color: rgba(255,255,255,0.35); }

.picker-close-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.15);
  background: transparent;
  color: #888;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.15s;
}
.picker-close-btn:hover { color: #fff; border-color: rgba(255,255,255,0.35); }

footer a {
  color: var(--label);
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.3);
  transition: border-color 0.15s;
}
footer a:hover { border-color: var(--label); }