/* === Fonts === */
@font-face {
  font-family: 'Inter';
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  src: url('../fonts/Inter-Regular.ttf') format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  src: url('../fonts/Inter-Medium.ttf') format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-weight: 600;
  font-style: normal;
  font-display: swap;
  src: url('../fonts/Inter-SemiBold.ttf') format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-weight: 700;
  font-style: normal;
  font-display: swap;
  src: url('../fonts/Inter-Bold.ttf') format('truetype');
}

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

:root {
  --red: #f87171;
  --dark-red: #652a2a;
  --green: #086229;
  --white: #ffffff;
  --black: #000000;
  --base: #18181b;
  --raised: #1e1e22;
  --overlay: #28282d;
  --gray: #363636;
  --input: #454545;
  --text-primary: rgba(255, 255, 255, 0.95);
  --text-secondary: rgba(255, 255, 255, 0.65);
  --text-muted: rgba(255, 255, 255, 0.4);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.1);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

html {
  scroll-behavior: smooth;
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--base); }
::-webkit-scrollbar-thumb { background: var(--gray); border-radius: 4px; border: 2px solid var(--base); }
::-webkit-scrollbar-thumb:hover { background: var(--input); }
::-webkit-scrollbar-corner { background: var(--base); }

* {
  scrollbar-width: thin;
  scrollbar-color: var(--gray) var(--base);
}

/* === Body === */
body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--black);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* === Nav === */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(22, 22, 22, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 2rem;
}

nav .inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 56px;
  overflow-x: auto;
}

nav .logo {
  font-weight: 700;
  font-size: 1.1rem;
  white-space: nowrap;
}

nav .logo span {
  color: var(--red);
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.15s ease;
}

nav a:hover {
  color: var(--white);
}

/* === Layout === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 4rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

section:last-child {
  border-bottom: none;
}

h2 {
  font-size: 1.35em;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

h3 {
  font-size: 1.1em;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 2rem;
}

/* === Logo Grid === */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.logo-card {
  background: var(--raised);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.logo-preview {
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 140px;
}

.logo-preview.dark-bg { background: var(--base); }
.logo-preview.light-bg { background: #f4f4f5; }
.logo-preview img { max-width: 100%; max-height: 100px; }

.logo-meta {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.logo-meta .name {
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.dl-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.dl-links a {
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-weight: 600;
  text-decoration: none;
  padding: 0.2rem 0.5rem;
  background: var(--overlay);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  white-space: nowrap;
}

.dl-links a:hover {
  background: var(--red);
  color: #fff;
}

/* === Color Swatches === */
.color-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}

.swatch {
  background: var(--raised);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.swatch:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.swatch:active {
  transform: scale(0.97);
}

.swatch-color {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
}

.swatch-color .copy-label {
  opacity: 0;
  transition: opacity 0.15s ease;
}

.swatch:hover .swatch-color .copy-label {
  opacity: 1;
}

.swatch-info { padding: 0.75rem 1rem; }
.swatch-name { font-weight: 600; font-size: 0.9rem; }
.swatch-hex { color: var(--text-secondary); font-size: 0.8rem; font-family: 'Inter', monospace; }
.swatch-rgb { color: var(--text-muted); font-size: 0.75rem; }

/* === Toast === */
.copied-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--green);
  color: white;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
  z-index: 1000;
}

.copied-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* === Typography Section === */
.type-specimen {
  background: var(--raised);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.type-specimen .label {
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.type-specimen .sample {
  margin-bottom: 0.25rem;
}

.type-stack {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-family: monospace;
  background: var(--overlay);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s ease;
}

.type-stack:hover {
  background: var(--gray);
}

.type-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

/* === Footer === */
footer {
  text-align: center;
  padding: 3rem 0;
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* === Responsive === */
@media (max-width: 768px) {
  .color-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .logo-grid { grid-template-columns: 1fr; }
  .type-grid { grid-template-columns: 1fr; }
  nav .inner { gap: 1.25rem; }
}