/* Helium Brand Identity Kit Styles */

:root {
  /* Colors */
  --color-primary: #1A1A1A;
  --color-secondary: #2D2D2D;
  --color-muted: #666666;
  --color-light: #E0E0E0;
  --color-off-white: #FAFAFA;
  --color-accent: #B8860B;
  --color-white: #FFFFFF;
  
  /* Typography */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 96px;
  
  /* Container */
  --container-max: 1200px;
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-primary);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.2;
}

h1 { font-size: 48px; }
h2 { font-size: 32px; }
h3 { font-size: 24px; }
h4 { font-size: 18px; }

p {
  margin-bottom: var(--space-sm);
}

code {
  font-family: 'SF Mono', Monaco, monospace;
  font-size: 14px;
  background: var(--color-off-white);
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--color-accent);
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Hero Section */
.hero {
  background: var(--color-off-white);
  padding: var(--space-3xl) 0;
  text-align: center;
  border-bottom: 1px solid var(--color-light);
}

.logo-mark {
  margin-bottom: var(--space-md);
}

.hero-title {
  font-size: 72px;
  letter-spacing: -2px;
  margin-bottom: var(--space-xs);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
}

.hero-description {
  font-size: 20px;
  color: var(--color-muted);
  font-weight: 300;
}

/* Sections */
.section {
  padding: var(--space-3xl) 0;
}

.section-alt {
  background: var(--color-off-white);
}

.section-title {
  font-size: 40px;
  margin-bottom: var(--space-sm);
  text-align: center;
}

.section-intro {
  text-align: center;
  color: var(--color-muted);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  font-size: 18px;
}

/* Color Palette */
.color-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.color-card {
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.color-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.color-card.accent {
  border: 2px solid var(--color-accent);
}

.color-swatch {
  height: 160px;
  width: 100%;
}

.color-info {
  padding: var(--space-md);
}

.color-info h3 {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.color-info code {
  display: inline-block;
  margin-bottom: var(--space-xs);
}

.color-info p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0;
}

/* Typography Showcase */
.type-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.type-pair {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.type-sample {
  background: var(--color-white);
  padding: var(--space-xl);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.type-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.type-sample.display h1 {
  font-family: var(--font-display);
  font-size: 42px;
  margin-bottom: var(--space-sm);
}

.type-sample.body h3 {
  font-family: var(--font-body);
  font-size: 28px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.type-example {
  color: var(--color-muted);
  font-size: 16px;
  margin: 0;
}

/* Type Scale */
.type-scale {
  background: var(--color-white);
  padding: var(--space-xl);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.type-scale h3 {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-light);
}

.scale-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-off-white);
}

.scale-size {
  font-family: 'SF Mono', monospace;
  font-size: 13px;
  color: var(--color-muted);
  min-width: 60px;
}

.scale-text {
  font-family: var(--font-display);
  color: var(--color-primary);
}

/* Logo Section */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.logo-variant {
  text-align: center;
}

.logo-variant h3 {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
}

.logo-preview {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  margin-bottom: var(--space-md);
}

.logo-preview.dark {
  background: var(--color-off-white);
}

.logo-preview.light {
  background: var(--color-white);
  border: 1px solid var(--color-light);
}

.download-btn {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s ease;
}

.download-btn:hover {
  background: var(--color-secondary);
}

/* Spacing Section */
.spacing-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.spacing-visual, .grid-visual {
  background: var(--color-white);
  padding: var(--space-xl);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.spacing-visual h3, .grid-visual h3 {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
}

.spacing-scale {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.space-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.space-label {
  font-family: 'SF Mono', monospace;
  font-size: 13px;
  color: var(--color-muted);
  min-width: 60px;
}

.space-bar {
  height: 24px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 4px;
}

.grid-demo {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-sm);
  height: 200px;
}

.grid-col {
  background: var(--color-off-white);
  border-radius: 2px;
}

.grid-col:nth-child(odd) {
  background: var(--color-light);
  opacity: 0.5;
}

.grid-note {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: var(--space-md);
  text-align: center;
}

/* Social Templates */
.templates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.template-card {
  text-align: center;
}

.template-card h3 {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
}

.template-preview {
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ig-post {
  aspect-ratio: 1;
  padding: var(--space-lg);
}

.ig-content {
  text-align: center;
}

.ig-content h4 {
  font-family: var(--font-display);
  font-size: 24px;
  margin: var(--space-sm) 0;
}

.ig-content p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0;
}

.ig-story {
  aspect-ratio: 9/16;
  max-height: 400px;
  padding: var(--space-lg);
}

.linkedin {
  aspect-ratio: 1.91/1;
  padding: var(--space-md);
}

.li-content {
  width: 100%;
}

.li-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.li-avatar {
  width: 48px;
  height: 48px;
  background: var(--color-off-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.li-meta {
  text-align: left;
}

.li-meta strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
}

.li-meta span {
  font-size: 12px;
  color: var(--color-muted);
}

.li-text {
  font-size: 14px;
  line-height: 1.5;
  text-align: left;
}

.twitter {
  aspect-ratio: 16/9;
  padding: var(--space-md);
}

.tw-content {
  width: 100%;
  text-align: left;
}

.tw-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.tw-header span {
  font-size: 14px;
  font-weight: 600;
}

.tw-content p {
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
}

.template-dim {
  font-size: 12px;
  color: var(--color-muted);
  font-family: 'SF Mono', monospace;
}

/* Guidelines */
.guidelines-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.guideline-card {
  background: var(--color-white);
  padding: var(--space-xl);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.guideline-card h3 {
  font-family: var(--font-body);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-off-white);
}

.guideline-card ul {
  list-style: none;
}

.guideline-card li {
  padding: var(--space-xs) 0;
  font-size: 15px;
  color: var(--color-secondary);
  position: relative;
  padding-left: var(--space-md);
}

.guideline-card li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

/* Footer */
.footer {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-xl) 0;
  text-align: center;
}

.footer p {
  margin: 0;
}

.footer-note {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: var(--space-xs);
  opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 48px;
  }
  
  .type-showcase,
  .spacing-showcase,
  .guidelines-grid {
    grid-template-columns: 1fr;
  }
  
  .color-grid,
  .logo-grid,
  .templates-grid {
    grid-template-columns: 1fr;
  }
  
  h1 { font-size: 36px; }
  h2 { font-size: 28px; }
  h3 { font-size: 22px; }
}