/* ============================================
   Ride It Out — Website Stylesheet
   Twilight Depth palette · Refined minimalism
   ============================================ */

/* --- Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&family=DM+Serif+Display&display=swap');

/* --- Custom Properties --- */
:root {
  /* Colors — Twilight Depth */
  --color-bg: #0f1318;
  --color-surface: #1a2028;
  --color-surface-hover: #212a34;
  --color-accent: #4a7c7c;
  --color-accent-hover: #5a9292;
  --color-accent-secondary: #6b6b8d;
  --color-text: #e8eaed;
  --color-text-secondary: #8a919a;
  --color-text-dim: #555d66;
  --color-success: #5c8a6b;
  --color-border: #252d38;

  /* Typography */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  --text-display: 3rem;    /* ~48px */
  --text-title: 1.5rem;    /* 24px */
  --text-body: 1.0625rem;  /* 17px */
  --text-caption: 0.875rem;/* 14px */
  --text-small: 0.8125rem; /* 13px */

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;

  /* Spacing — 8pt scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* Layout */
  --max-width: 1080px;
  --max-width-narrow: 720px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover {
  color: var(--color-accent-hover);
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4 {
  line-height: 1.2;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(15, 19, 24, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.site-logo:hover {
  color: var(--color-text);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.site-nav a {
  font-size: var(--text-caption);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--color-text);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: all 0.3s ease;
}

/* --- Hero --- */
.hero {
  padding: var(--space-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(74, 124, 124, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__tagline {
  font-family: var(--font-display);
  font-size: var(--text-display);
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  position: relative;
}

.hero__tagline em {
  font-style: italic;
  color: var(--color-accent);
}

.hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.6;
}

.hero__cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.app-store-badge {
  height: 54px;
  transition: opacity 0.2s ease;
}

.app-store-badge:hover {
  opacity: 0.85;
}

.hero__screenshot {
  margin-top: var(--space-3xl);
  position: relative;
}

.hero__screenshot img {
  max-width: 280px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
}

/* --- Section --- */
.section {
  padding: var(--space-4xl) 0;
}

.section__label {
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.section__heading {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: var(--space-lg);
}

.section__description {
  color: var(--color-text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

.section--centered {
  text-align: center;
}

.section--centered .section__description {
  margin: 0 auto;
}

/* --- Feature Cards --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.feature-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.feature-card__name {
  font-size: var(--text-caption);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.feature-card__title {
  font-family: var(--font-display);
  font-size: var(--text-title);
  margin-bottom: var(--space-md);
}

.feature-card__description {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- Philosophy --- */
.philosophy {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.philosophy__content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.philosophy__heading {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: var(--space-lg);
}

.philosophy__text {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.philosophy__text:last-child {
  margin-bottom: 0;
}

.philosophy__emphasis {
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

/* --- Footer --- */
.site-footer {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--color-border);
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
}

.footer-links a:hover {
  color: var(--color-text);
}

.footer-copy {
  font-size: var(--text-small);
  color: var(--color-text-dim);
}

.footer-contact {
  font-size: var(--text-small);
  color: var(--color-text-dim);
}

.footer-contact a {
  color: var(--color-text-secondary);
}

/* --- Legal Pages --- */
.legal {
  padding: var(--space-3xl) 0 var(--space-4xl);
}

.legal__title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  margin-bottom: var(--space-sm);
}

.legal__date {
  font-size: var(--text-caption);
  color: var(--color-text-dim);
  margin-bottom: var(--space-3xl);
}

.legal h2 {
  font-family: var(--font-display);
  font-size: var(--text-title);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.legal h3 {
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.legal p {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.legal ul {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.legal li {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-sm);
  position: relative;
  padding-left: var(--space-md);
}

.legal li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

.legal a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal strong {
  color: var(--color-text);
  font-weight: var(--weight-semibold);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-text);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-text);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --text-display: 2.25rem;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-lg);
    gap: var(--space-md);
  }

  .site-nav.is-open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    padding: var(--space-3xl) 0;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

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

  .philosophy__heading,
  .section__heading {
    font-size: 1.625rem;
  }

  .legal__title {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  :root {
    --text-display: 1.875rem;
  }

  .container {
    padding: 0 var(--space-md);
  }

  .hero__subtitle {
    font-size: 1rem;
  }

  .feature-card {
    padding: var(--space-lg);
  }
}