/* NewsIO AI Website */

@import url('https://fonts.googleapis.com/css2?family=Lora:wght@400;500;600;700&family=DM+Sans:wght@300;400;500;600&display=swap');

:root {
  /* iOS App Colors - identical to Colors.swift */
  --brand-primary: #1A365D;
  --brand-secondary: #2C5282;
  --brand-accent: #3182CE;
  --text-primary: #0A0A0A;
  --text-secondary: #4A5568;
  --text-tertiary: #64748B;
  --bg-primary: #FFFFFF;
  --bg-secondary: #F7FAFC;
  --bg-tertiary: #EDF2F7;
  --border: #E2E8F0;
  --divider: #CBD5E0;
  --success: #22C55E;
  --error: #EF4444;

  /* Typography - matches iOS: New York-like serif + SF Pro-like sans */
  --font-display: 'Lora', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing - 8pt grid (matches iOS Spacing.swift) */
  --max-width: 720px;
  --spacing-xs: 0.5rem;    /* 8pt */
  --spacing-sm: 1rem;      /* 16pt */
  --spacing-md: 1.5rem;    /* 24pt */
  --spacing-lg: 2rem;      /* 32pt */
  --spacing-xl: 3rem;      /* 48pt */
  --spacing-xxl: 4rem;     /* 64pt */
}

/* Dark mode - matches iOS backgroundDark: #0F1419 */
@media (prefers-color-scheme: dark) {
  :root {
    --brand-accent: #60A5FA;       /* brandAccentText dark: 7.2:1 contrast */
    --text-primary: #FFFFFF;
    --text-secondary: #CBD5E0;
    --text-tertiary: #9CA3AF;
    --bg-primary: #0F1419;         /* backgroundDark */
    --bg-secondary: #1A1F2E;       /* backgroundDarkElevated */
    --bg-tertiary: #1E2535;
    --border: #2D3748;
    --divider: #4A5568;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Header */
header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

@media (prefers-color-scheme: dark) {
  header {
    background: rgba(15, 20, 25, 0.92);
  }
}

header .container {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--brand-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: color 0.2s ease;
}

@media (prefers-color-scheme: dark) {
  .logo {
    color: #FFFFFF;
  }
}

.logo:hover {
  color: var(--brand-accent);
  text-decoration: none;
}

nav {
  display: flex;
  gap: var(--spacing-md);
}

nav a {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: color 0.2s ease;
}

nav a:hover {
  color: var(--brand-primary);
  text-decoration: none;
}

@media (prefers-color-scheme: dark) {
  nav a:hover {
    color: var(--text-primary);
  }
}

/* Main Content */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xxl) var(--spacing-md);
}

/* Typography - mirrors iOS display/headline scale */
h1 {
  font-family: var(--font-display);
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--brand-primary);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.03em;
}

@media (prefers-color-scheme: dark) {
  h1 {
    color: var(--text-primary);
  }
}

h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--brand-primary);
  margin-top: var(--spacing-xxl);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

@media (prefers-color-scheme: dark) {
  h2 {
    color: var(--text-primary);
  }
}

h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.01em;
}

h4 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

.meta {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.02em;
}

ul, ol {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

li {
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
}

strong {
  font-weight: 600;
  color: var(--text-primary);
}

a {
  color: var(--brand-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--brand-secondary);
  text-decoration: underline;
}

@media (prefers-color-scheme: dark) {
  a:hover {
    color: #93C5FD;
  }
}

hr {
  border: none;
  height: 1px;
  background: var(--border);
  margin: var(--spacing-xxl) 0;
}

/* Contact Box - matches iOS cardStyle with brandAccent left border */
.contact-box {
  background: var(--bg-secondary);
  border-left: 3px solid var(--brand-accent);
  border-radius: 10px;
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.contact-box h3 {
  margin-top: 0;
  color: var(--brand-primary);
}

@media (prefers-color-scheme: dark) {
  .contact-box h3 {
    color: var(--text-primary);
  }
}

.contact-box p:last-child {
  margin-bottom: 0;
}

/* FAQ Section */
.faq-item {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h3 {
  margin-top: 0;
  margin-bottom: var(--spacing-xs);
  color: var(--brand-primary);
}

@media (prefers-color-scheme: dark) {
  .faq-item h3 {
    color: var(--text-primary);
  }
}

/* Info Box */
.info-box {
  background: var(--bg-tertiary);
  border-radius: 10px;
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0;
}

.info-box p:last-child {
  margin-bottom: 0;
}

/* Footer */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  margin-top: var(--spacing-xxl);
  padding: var(--spacing-lg) var(--spacing-md);
}

footer .container {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

footer p {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-xs);
}

footer .footer-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-sm);
}

footer .footer-links a {
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

footer .footer-links a:hover {
  color: var(--brand-accent);
  text-decoration: none;
}

/* Index page - Hero */
.hero {
  text-align: center;
  padding: var(--spacing-xxl) var(--spacing-md) var(--spacing-xl);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--brand-primary);
  background: none;
  -webkit-text-fill-color: unset;
}

@media (prefers-color-scheme: dark) {
  .hero h1 {
    color: var(--text-primary);
  }
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.65;
}

.app-badge {
  display: inline-block;
}

.app-badge img {
  height: 48px;
}

/* Feature Cards - matches iOS cardStyle: no hover transform */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: var(--spacing-xl) 0;
}

.feature-card {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: var(--spacing-lg);
  border: 1px solid var(--border);
}

.feature-card h3 {
  margin-top: 0;
  color: var(--brand-primary);
  font-size: 1.1rem;
}

@media (prefers-color-scheme: dark) {
  .feature-card h3 {
    color: var(--text-primary);
  }
}

.feature-card p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* CTA Section */
.cta-section {
  text-align: center;
  background: var(--bg-secondary);
  border-radius: 16px;
  padding: var(--spacing-xl) var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  border: 1px solid var(--border);
}

.cta-section h2 {
  margin-top: 0;
}

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.15rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  nav {
    gap: var(--spacing-sm);
  }

  nav a {
    font-size: 0.85rem;
  }

  main {
    padding: var(--spacing-xl) var(--spacing-md);
  }
}

@media (max-width: 480px) {
  body {
    font-size: 16px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.35rem;
  }

  .hero h1 {
    font-size: 2.1rem;
  }

  nav {
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }

  header .container {
    padding: var(--spacing-sm);
  }

  main {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  .contact-box,
  .info-box {
    padding: var(--spacing-md);
  }
}

/* Print Styles */
@media print {
  header {
    position: static;
    border-bottom: 2px solid #000;
  }

  nav {
    display: none;
  }

  main {
    max-width: 100%;
  }

  a {
    text-decoration: underline;
    color: #000;
  }

  .contact-box,
  .info-box {
    border: 1px solid #000;
    background: #fff;
  }
}