/* Modern CSS Tools — Global Styles */

:root {
  --bg: #09090b;
  --bg-elevated: #131316;
  --bg-card: #18181b;
  --bg-input: #1e1e23;
  --border: #27272a;
  --border-hover: #3f3f46;
  --text: #fafafa;
  --text-secondary: #a1a1aa;
  --text-dim: #71717a;
  --accent: #818cf8;
  --accent-hover: #a5b4fc;
  --accent-subtle: rgba(129, 140, 248, 0.1);
  --success: #34d399;
  --code-bg: #0c0c0f;
  --radius: 8px;
  --radius-lg: 12px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, 'Cascadia Code', Menlo, monospace;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
  --transition: 0.15s ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout */
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }

/* Header */
header.site-header {
  border-bottom: 1px solid var(--border);
  padding: 0;
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}
header.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 56px;
}
header.site-header > .container > a {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
}
header.site-header nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
header.site-header nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 450;
  font-size: 0.875rem;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}
header.site-header nav a:hover {
  color: var(--text);
  background: var(--accent-subtle);
}

/* Main */
main { padding: 2.5rem 0 4rem; }
main > .container > section.content:first-child > h1:first-child {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 0.5rem;
  background: linear-gradient(135deg, var(--text) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
h1 { font-size: 2.25rem; font-weight: 800; letter-spacing: -0.03em; margin: 0 0 0.5rem; }

/* Hero section */
.hero {
  position: relative;
  padding-bottom: 1.5rem;
}
.hero::before {
  content: '';
  position: absolute;
  inset: -2rem -1.5rem 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(129, 140, 248, 0.08) 1px, transparent 0);
  background-size: 24px 24px;
  pointer-events: none;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.6) 0%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.6) 0%, transparent 100%);
}
.hero h1 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 0.5rem;
  background: linear-gradient(135deg, #818cf8 0%, #ec4899 50%, #06b6d4 100%);
  background-size: 200% 200%;
  animation: heroGradient 6s ease infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
@keyframes heroGradient {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.hero-divider {
  height: 2px;
  margin-top: 1rem;
  background: linear-gradient(90deg, #818cf8, #ec4899, #06b6d4, transparent);
  border-radius: 1px;
  opacity: 0.4;
}
h2 { font-size: 1.35rem; font-weight: 700; letter-spacing: -0.02em; margin: 2.5rem 0 0.75rem; color: var(--text); }
h3 { font-size: 1.1rem; font-weight: 600; margin: 1.5rem 0 0.5rem; color: var(--text); }
p { color: var(--text-secondary); line-height: 1.7; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }
main > .container > p:first-of-type { font-size: 1.05rem; max-width: 720px; }
strong { color: var(--text); font-weight: 600; }
code { font-family: var(--font-mono); font-size: 0.875em; background: var(--bg-input); padding: 0.15em 0.4em; border-radius: 4px; color: var(--accent); }
pre { margin: 1rem 0; }
pre code {
  display: block;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  line-height: 1.6;
  overflow-x: auto;
  color: var(--text-secondary);
}

/* Tool layout */
.tool-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}
@media (max-width: 820px) {
  .tool-layout { grid-template-columns: 1fr; }
}
.tool-controls, .tool-output {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}
.tool-preview {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1rem;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Form controls */
label {
  display: block;
  color: var(--text-dim);
  font-size: 0.8rem;
  font-weight: 500;
  margin: 0.875rem 0 0.375rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
input[type="text"], input[type="number"], select, textarea {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
input[type="text"]:focus, input[type="number"]:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}
textarea { resize: vertical; }
input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--bg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition);
}
input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}
input[type="color"] {
  width: 3rem;
  height: 2.25rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 2px;
}
select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2371717a' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}

/* Buttons */
button, .btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  cursor: pointer;
  font-size: 0.875rem;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-sm);
}
button:hover, .btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
button:active, .btn:active {
  transform: translateY(0);
}
button.secondary {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  box-shadow: none;
}
button.secondary:hover {
  background: var(--border);
  color: var(--text);
  transform: translateY(-1px);
}

/* Code output */
.code-output {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.825rem;
  line-height: 1.6;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-all;
  position: relative;
  margin-top: 0.5rem;
}
.code-output .copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  padding: 0.25rem 0.625rem;
  font-size: 0.7rem;
  background: var(--bg-input);
  color: var(--text-dim);
  border: 1px solid var(--border);
  box-shadow: none;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.code-output .copy-btn:hover {
  background: var(--border);
  color: var(--text);
  transform: none;
}

/* Hub (index) */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}
.tool-card {
  --card-from: var(--accent);
  --card-to: var(--accent-hover);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  padding-top: calc(1.5rem + 2px);
  text-decoration: none;
  color: var(--text);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
/* Gradient top border */
.tool-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--card-from), var(--card-to));
  pointer-events: none;
}
/* Hover gradient overlay */
.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--card-from), var(--card-to));
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}
.tool-card:hover {
  transform: translateY(-4px);
  border-color: var(--card-from);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3), 0 0 20px color-mix(in srgb, var(--card-from) 15%, transparent);
}
.tool-card:hover::before {
  opacity: 0.06;
}

/* Card header with icon */
.card-header {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 0.5rem;
  position: relative;
  z-index: 1;
}
.card-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}
.tool-card h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  position: relative;
  z-index: 1;
}
.tool-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.5;
  position: relative;
  z-index: 1;
}

/* Card color themes */
.tool-card[data-color="indigo-violet"] { --card-from: #818cf8; --card-to: #8b5cf6; }
.tool-card[data-color="pink-orange"] { --card-from: #ec4899; --card-to: #f97316; }
.tool-card[data-color="purple-blue"] { --card-from: #a855f7; --card-to: #3b82f6; }
.tool-card[data-color="teal-cyan"] { --card-from: #14b8a6; --card-to: #06b6d4; }
.tool-card[data-color="rose-pink"] { --card-from: #f43f5e; --card-to: #ec4899; }
.tool-card[data-color="green-emerald"] { --card-from: #22c55e; --card-to: #10b981; }
.tool-card[data-color="orange-amber"] { --card-from: #f97316; --card-to: #f59e0b; }
.tool-card[data-color="red-rose"] { --card-from: #ef4444; --card-to: #f43f5e; }
.tool-card[data-color="blue-indigo"] { --card-from: #3b82f6; --card-to: #6366f1; }
.tool-card[data-color="violet-purple"] { --card-from: #8b5cf6; --card-to: #a855f7; }
.tool-card[data-color="cyan-blue"] { --card-from: #06b6d4; --card-to: #3b82f6; }
.tool-card[data-color="amber-yellow"] { --card-from: #f59e0b; --card-to: #eab308; }
.tool-card[data-color="emerald-teal"] { --card-from: #10b981; --card-to: #14b8a6; }
.tool-card[data-color="pink-violet"] { --card-from: #ec4899; --card-to: #8b5cf6; }
.tool-card[data-color="orange-red"] { --card-from: #f97316; --card-to: #ef4444; }

/* Guide cards */
.guide-card {
  --card-from: #818cf8;
  --card-to: #a5b4fc;
  border-left: 3px solid var(--accent);
  padding-top: 1.5rem;
}
.guide-card::after {
  display: none;
}
.guide-card:hover {
  border-left-color: var(--accent-hover);
}

/* Content sections — match full tool-layout width */
section.content {
  margin-top: 3rem;
}
section.content h2 {
  padding-bottom: 0.625rem;
  border-bottom: 1px solid var(--border);
}
section.content p,
section.content li {
  color: var(--text-secondary);
  line-height: 1.7;
}
section.content ul, section.content ol {
  padding-left: 1.25rem;
}
section.content li {
  margin-bottom: 0.5rem;
}
section.content li::marker {
  color: var(--accent);
}

/* AI-Overview answer box (TL;DR) */
.answer-box {
  background: var(--accent-subtle);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1rem 0 2rem;
}
.answer-box p {
  margin: 0;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.65;
}
.answer-box .answer-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

/* FAQ block */
.faq details {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.875rem 1rem;
  margin-bottom: 0.625rem;
}
.faq details[open] {
  border-color: var(--border-hover);
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  position: relative;
  padding-right: 1.5rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 0;
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
  transition: transform var(--transition);
}
.faq details[open] summary::after { content: '\2212'; }
.faq details > p,
.faq details > ul {
  margin: 0.625rem 0 0;
  color: var(--text-secondary);
  line-height: 1.65;
  font-size: 0.95rem;
}

/* Article meta line */
.article-meta {
  color: var(--text-dim);
  font-size: 0.825rem;
  margin: 0.25rem 0 1rem;
}
.article-meta a { color: var(--text-dim); text-decoration: underline; text-decoration-color: var(--border-hover); }
.article-meta a:hover { color: var(--text-secondary); }

/* Breadcrumb */
.breadcrumb {
  font-size: 0.825rem;
  color: var(--text-dim);
  margin: 0 0 1rem;
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb [aria-current="page"] { color: var(--text-dim); }

/* Footer */
footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-top: 4rem;
}
footer.site-footer p { margin: 0.25rem 0; color: var(--text-dim); }
footer.site-footer a {
  color: var(--text-dim);
  transition: color var(--transition);
}
footer.site-footer a:hover { color: var(--text-secondary); }

/* Cookie consent banner */
#cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem;
  z-index: 1000;
  box-shadow: 0 -4px 24px rgba(0,0,0,0.4);
}
.cookie-banner-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.cookie-banner-inner p { margin: 0; font-size: 0.875rem; color: var(--text-secondary); }
.cookie-banner-inner a { color: var(--accent); }
.cookie-banner-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }

/* Responsive */
@media (max-width: 640px) {
  h1, .hero h1 { font-size: 1.75rem; }
  .tool-grid { grid-template-columns: 1fr; }
  header.site-header nav { gap: 0; }
  header.site-header nav a { padding: 0.375rem 0.5rem; font-size: 0.8rem; }
  .hero::before { display: none; }
}

/* Checkbox styling */
input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* Layer cards in shadow composer, etc. */
.layer-card {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  margin-bottom: 0.5rem;
}