/* ============================================
   Offgrid Training — Static Site Stylesheet
   Dark, minimal, premium fitness design
   ============================================ */

/* --- Custom Properties --- */
:root {
  --color-bg: #010103;
  --color-bg-elevated: #161616;
  --color-bg-card: #FFFFFF10;
  --color-border: #2a2a2a;
  --color-text: #e5e5e5;
  --color-text-muted: #888;
  --color-text-subtle: #666;
  --color-accent: #3b82f6;
  --color-accent-muted: #2563eb;
  --color-accent-glow: rgba(59, 130, 246, 0.08);

  --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue',
    Helvetica, Arial, sans-serif;

  --max-width: 1080px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;
  --spacing-2xl: 7rem;

  --radius: 10px;
  --radius-sm: 6px;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

a:hover {
  color: #60a5fa;
}

ul, ol {
  list-style: none;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

main {
  flex: 1;
}

/* --- Header / Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(14, 14, 14, 0.85);
  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: 60px;
}

.site-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

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

.site-nav {
  position: fixed;
  top: 0;
  right: 0;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-right: max(1.5rem, calc((100vw - var(--max-width)) / 2 + 1.5rem));
  z-index: 101;
}

.site-nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-text);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  margin: 5px 0;
  border-radius: 1px;
}

/* Mobile nav close button */
.nav-close {
  display: none;
  position: absolute;
  top: 0;
  right: 1.5rem;
  height: 60px;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 2.25rem;
  line-height: 60px;
  cursor: pointer;
  padding: 0 0.5rem;
  z-index: 111;
}

@media (max-width: 640px) {
  .nav-toggle {
    display: block;
    z-index: 110;
  }

  .nav-close {
    display: block;
  }

  .site-nav {
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    height: auto;
    padding-right: 0;
    z-index: 105;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    background-color: rgba(14, 14, 14, 0.7);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.35s ease-out, visibility 0.35s ease-out;
  }

  .site-nav.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav a {
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--color-text);
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s ease-out, transform 0.3s ease-out, color 0.2s ease;
  }

  .site-nav.open a { opacity: 1; transform: translateY(0); }
  .site-nav.open a:nth-child(1) { transition-delay: 0.08s; }
  .site-nav.open a:nth-child(2) { transition-delay: 0.16s; }
  .site-nav.open a:nth-child(3) { transition-delay: 0.24s; }
  .site-nav.open a:nth-child(4) { transition-delay: 0.32s; }

  body.nav-open {
    overflow: hidden;
  }
}

/* --- Hero Section --- */
.hero {
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
  text-align: center;
}

.hero-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--spacing-md);
  color: #fff;
}

.hero .subtitle {
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.7;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: #fff;
  color: #000;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 1.8rem;
  border-radius: 50px;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.hero-cta:hover {
  background-color: #e5e5e5;
  color: #000;
  transform: translateY(-1px);
}

.hero-cta svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* --- Feature Showcase (screenshot + text pairs) --- */
.section {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-header h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: var(--spacing-xs);
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

/* --- Screenshots Gallery --- */
.screenshots {
  padding: var(--spacing-lg) 0;
}

.screenshot-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  padding-left: 0.25rem;
}

.screenshot-scroll-wrapper {
  position: relative;
}

.screenshot-scroll-wrapper::before,
.screenshot-scroll-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 3rem;
  z-index: 2;
  pointer-events: none;
}

.screenshot-scroll-wrapper::before {
  left: -3rem;
  background: linear-gradient(to right, var(--color-bg), transparent);
}

.screenshot-scroll-wrapper::after {
  right: -3rem;
  background: linear-gradient(to left, var(--color-bg), transparent);
}

.screenshot-scroll {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 -3rem;
  padding: 0.5rem 3rem 2rem;
  scrollbar-width: none;
}

.screenshot-scroll::-webkit-scrollbar {
  display: none;
}

.screenshot-item {
  flex: 0 0 auto;
}

.screenshot-item img {
  width: 240px;
  height: auto;
  border-radius: 18px;
  border: 1px solid var(--color-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.screenshot-item--ipad img {
  width: 340px;
  border-radius: 14px;
}

@media (max-width: 768px) {
  .screenshot-item img {
    width: 200px;
  }

  .screenshot-item--ipad img {
    width: 300px;
  }
}

@media (max-width: 480px) {
  .screenshot-item img {
    width: 180px;
  }

  .screenshot-item--ipad img {
    width: 260px;
  }
}

/* --- Feature Grid --- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.feature-card,
.contact-card,
.roadmap-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background-color: var(--color-bg-card);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.03) inset;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card {
  padding: 1.75rem;
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.08), transparent 42%),
    var(--color-bg-card);
}

.feature-card:hover {
  border-color: #3a3a3a;
  transform: translateY(-2px);
  box-shadow:
    0 0 0 1px rgba(59, 130, 246, 0.06),
    0 18px 45px rgba(0, 0, 0, 0.22);
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Privacy Features Section --- */
.privacy-features {
  border-top: 1px solid var(--color-border);
}

/* --- CTA Banner --- */
.cta-banner {
  text-align: center;
  padding: var(--spacing-xl) 0 var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
}

.cta-banner h2 {
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--spacing-sm);
}

.cta-banner p {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
}

/* --- Roadmap Section --- */
.roadmap {
  border-top: 1px solid var(--color-border);
}

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.roadmap-card {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.08), transparent 42%),
    var(--color-bg-card);
  padding: 1.75rem;
}

.roadmap-card:hover {
  border-color: #3a3a3a;
  transform: translateY(-2px);
  box-shadow:
    0 0 0 1px rgba(59, 130, 246, 0.06),
    0 18px 45px rgba(0, 0, 0, 0.22);
}

.roadmap-card--featured {
  grid-column: span 2;
}

.roadmap-card--inprogress {
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.22), transparent 46%),
    linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(59, 130, 246, 0.02) 54%, transparent 78%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 70%),
    var(--color-bg-card);
  border-color: rgba(59, 130, 246, 0.35);
  box-shadow:
    0 0 0 1px rgba(59, 130, 246, 0.08),
    0 18px 50px rgba(0, 0, 0, 0.28);
}

.roadmap-card--ideas {
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.1), transparent 42%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 62%),
    var(--color-bg-card);
}

.roadmap-status {
  display: inline-flex;
  align-items: center;
  margin-bottom: 0.75rem;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(59, 130, 246, 0.28);
  background: rgba(59, 130, 246, 0.08);
  color: #8ec1ff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.roadmap-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
}

.roadmap-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .roadmap-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .roadmap-card--featured {
    grid-column: span 2;
  }
}

@media (max-width: 480px) {
  .roadmap-grid {
    grid-template-columns: 1fr;
  }

  .roadmap-card--featured {
    grid-column: auto;
  }
}

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

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--color-text-subtle);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

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

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

@media (max-width: 480px) {
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* Mobile overrides: reduce large horizontal gutters for screenshot scroller */
@media (max-width: 1080px) {
  .screenshot-scroll-wrapper::before,
  .screenshot-scroll-wrapper::after {
    width: 1.5rem;
  }

  .screenshot-scroll-wrapper::before { left: -1.5rem; }
  .screenshot-scroll-wrapper::after  { right: -1.5rem; }

  .screenshot-scroll {
    margin: 0 -1.5rem;
    padding: 0.5rem 1.5rem 2rem;
  }
}

/* --- Prose / Content Pages (Privacy, Support) --- */
.page-header {
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
}

.page-header h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: var(--spacing-xs);
}

.page-header p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.prose {
  max-width: 720px;
  margin: 0 auto;
  padding-bottom: var(--spacing-2xl);
}

.prose h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.prose h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

.prose p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.prose ul {
  margin-bottom: var(--spacing-sm);
  padding-left: 1.25rem;
}

.prose ul li {
  color: var(--color-text-muted);
  line-height: 1.8;
  position: relative;
  padding-left: 1rem;
  margin-bottom: 0.35rem;
}

.prose ul li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--color-text-subtle);
}

.prose a {
  color: var(--color-accent);
}

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

/* --- FAQ Section --- */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
}

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-item h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
}

.faq-item p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- Support Contact Card --- */
.contact-card {
  max-width: 720px;
  margin: 0 auto var(--spacing-xl);
  padding: 2rem;
  text-align: center;
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.1), transparent 42%),
    var(--color-bg-card);
}

.contact-card h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.contact-card p {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  font-size: 0.95rem;
}

.contact-email {
  display: inline-block;
  background-color: var(--color-accent);
  color: #fff !important;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.contact-email:hover {
  background-color: var(--color-accent-muted);
  color: #fff !important;
  transform: translateY(-1px);
}

/* --- Utility --- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }