/* ── Reset & base ─────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font);
  background: var(--bg);
  min-height: 100vh;
  color: var(--text-primary);
  display: flex; flex-direction: column;
}

/* ── Design tokens ────────────────────────────────────────────────── */
:root {
  --bg: #040714;
  --surface-1: rgba(255,255,255,.03);
  --surface-2: rgba(255,255,255,.06);
  --border-subtle: rgba(255,255,255,.07);
  --border: rgba(255,255,255,.1);
  --border-strong: rgba(255,255,255,.22);
  --text-primary: #f9f9f9;
  --text-secondary: #cacaca;
  --text-muted: rgba(255,255,255,.55);
  --accent: #0063e5;
  --accent-bright: #0080ff;
  --font: 'Avenir Next', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --text-xs: 0.75rem; --text-sm: 0.875rem; --text-base: 1rem;
  --text-lg: 1.125rem; --text-xl: 1.25rem; --text-2xl: 1.5rem;
  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px;
  --space-6: 24px; --space-8: 32px;
  --radius-sm: 6px; --radius: 10px; --radius-lg: 15px;
  --ease-snap: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 120ms; --dur: 200ms;
}

/* ── Header ───────────────────────────────────────────────────────── */
.header-bar {
  background: linear-gradient(in oklch 135deg, #B015B0 0%, #3D0080 50%, #040714 100%);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 var(--space-6);
  height: 68px;
  position: sticky;
  top: 0;
  z-index: 200;
  display: flex;
  align-items: center;
}

.header-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.header-logo-img {
  height: 36px; width: auto; flex-shrink: 0;
  filter: brightness(0) invert(1);
  transition: transform 0.3s var(--ease-snap);
  display: block;
}
.header-logo-img:hover { transform: scale(1.14) rotate(-9deg); }

.header-logo h1 { font-size: 1.2em; font-weight: 600; color: var(--text-primary); letter-spacing: .5px; }
.header-subtitle { font-size: .82em; color: rgba(255,255,255,.72); font-weight: 500; margin-top: 3px; }

.header-home {
  display: flex; align-items: center;
  padding: 5px;
  color: rgba(255,255,255,0.9); text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--dur), background var(--dur); flex-shrink: 0;
  margin-left: 5px;
}
.header-home:hover { color: #fff; background: rgba(255,255,255,0.12); }
.header-home svg { width: 34px; height: 34px; display: block; }

/* ── Nav tabs ─────────────────────────────────────────────────────── */
nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-tab {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,.65);
  text-decoration: none;
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  transition: color var(--dur), background var(--dur);
}
.nav-tab:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav-tab.active {
  color: #fff;
  background: rgba(255,255,255,.12);
}

/* ── Layout ───────────────────────────────────────────────────────── */
.container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 30px;
  flex: 1;
}

/* ── Tab content ──────────────────────────────────────────────────── */
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── Gallery grid ─────────────────────────────────────────────────── */
.config-row {
  display: flex; gap: 12px; align-items: center;
  margin-bottom: 24px; flex-wrap: wrap;
}
.config-row label { font-size: .82rem; color: var(--text-muted); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
  gap: 24px;
}

/* ── Cards ────────────────────────────────────────────────────────── */
.card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  backdrop-filter: blur(10px);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.card-title { font-size: 1rem; font-weight: 600; }
.card-domain { font-size: .78rem; color: var(--text-muted); }

canvas {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  display: block;
}

.actions { margin-top: 12px; display: flex; gap: 8px; flex-wrap: wrap; }

/* ── Buttons ──────────────────────────────────────────────────────── */
button, .btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: .82rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--dur);
}
button:hover, .btn:hover { background: var(--accent-bright); }
button.secondary, .btn-secondary {
  background: var(--surface-2);
  border: 1px solid var(--border);
}
button.secondary:hover, .btn-secondary:hover { background: rgba(255,255,255,.12); }

/* ── Form controls ────────────────────────────────────────────────── */
select, input[type="text"], input[type="number"], input[type="color"] {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: .82rem;
  font-family: inherit;
}
select:focus, input:focus {
  outline: 2px solid var(--accent-bright);
  outline-offset: 2px;
}

input[type="color"] {
  padding: 2px;
  width: 36px;
  height: 32px;
  cursor: pointer;
}

input[type="range"] {
  accent-color: var(--accent-bright);
}

/* ── Custom Creator ───────────────────────────────────────────────── */
.creator-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 24px;
  align-items: start;
}

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

.creator-preview {
  position: sticky;
  top: 98px;
}

.field-group {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.field-group-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.field {
  margin-bottom: 10px;
}
.field:last-child { margin-bottom: 0; }

.field label {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-bottom: 4px;
}

.field input[type="text"],
.field input[type="number"],
.field select {
  width: 100%;
}

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

.field-row label {
  margin-bottom: 0;
  white-space: nowrap;
}

.color-field {
  display: flex;
  align-items: center;
  gap: 8px;
}

.color-field input[type="color"] {
  flex-shrink: 0;
}

.color-field input[type="text"] {
  flex: 1;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: var(--text-xs);
}

/* pattern selector grid */
.pattern-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.pattern-option {
  padding: 6px 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-1);
  color: var(--text-secondary);
  font-size: var(--text-xs);
  text-align: center;
  cursor: pointer;
  transition: all var(--dur);
}
.pattern-option:hover { background: var(--surface-2); color: var(--text-primary); }
.pattern-option.active {
  border-color: var(--accent-bright);
  background: rgba(0,99,229,.15);
  color: var(--text-primary);
}

/* gradient presets */
.gradient-presets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-top: 8px;
}

.gradient-swatch {
  height: 28px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--dur), transform var(--dur-fast);
}
.gradient-swatch:hover { transform: scale(1.05); }
.gradient-swatch.active { border-color: #fff; }

/* ── Footer ───────────────────────────────────────────────────────── */
.info-footer {
  text-align: center; padding: 20px var(--space-6) 28px;
  color: var(--text-muted); font-size: .78em; line-height: 1.8;
  border-top: 1px solid var(--border-subtle);
  margin-top: 48px;
}
.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--dur);
}
.footer-link:hover,
.footer-link:focus-visible {
  color: var(--text-secondary);
  text-decoration: underline;
}

/* ── Focus styles ─────────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 2px;
}

/* ── Skip link ────────────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  background: var(--accent-bright);
  color: #000;
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  text-decoration: none;
  transition: top var(--dur);
}
.skip-link:focus { top: 0; }

/* ── Toast ──────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 999;
  background: #1a1730; border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px; padding: 10px 16px;
  font-size: 0.84rem; color: var(--text-primary, #f9f9f9);
  box-shadow: 0 4px 20px rgba(0,0,0,0.55);
  pointer-events: none;
  transform: translateY(8px); opacity: 0;
  transition: opacity 0.18s, transform 0.18s;
}
.toast.visible { opacity: 1; transform: translateY(0); }

/* ── Button press feedback ────────────────────────────────────── */
button:active, .btn:active {
  transform: scale(0.97);
  transition-duration: 120ms;
}

/* ── Entrance animation ───────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Skeleton loading ─────────────────────────────────────────── */
@keyframes shimmer { to { background-position: -200% 0; } }
.skeleton {
  background: linear-gradient(90deg, var(--surface-1) 25%, var(--surface-2) 50%, var(--surface-1) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: 10px;
}

/* ── Reduced motion ───────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .creator-layout {
    grid-template-columns: 1fr;
  }
  .creator-preview {
    position: static;
  }
}

@media (max-width: 600px) {
  .header-bar { padding: 0 var(--space-4); }
  .container { padding: var(--space-4); }
  .grid { grid-template-columns: 1fr; }
  .nav-tab { padding: 6px 12px; font-size: var(--text-xs); }
  .pattern-grid { grid-template-columns: repeat(2, 1fr); }
}