/* =============================================
   Nephi's Gate — Main Stylesheet
   ============================================= */

:root {
  /* Brand colours (fixed) */
  --green-dark: #1a4731;
  --green: #2d6a4f;
  --green-mid: #40916c;
  --green-light: #74c69d;
  --gold: #c9a227;
  --gold-light: #f4d03f;

  /* Light mode surface tokens */
  --bg: #ffffff;
  --bg-alt: #fdf8f0;
  --surface: #ffffff;
  --border: #e9ecef;
  --text: #1a1a2e;
  --text-muted: #6c757d;
  --text-strong: #343a40;
  --header-bg: rgba(255,255,255,0.95);
  --shadow: 0 4px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.15);

  --radius: 16px;
  --radius-sm: 8px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Dark mode tokens */
[data-theme="dark"] {
  --bg: #0e1a13;
  --bg-alt: #141f18;
  --surface: #1a2b20;
  --border: #263d2e;
  --text: #e8ede9;
  --text-muted: #8aab95;
  --text-strong: #d4e8d8;
  --header-bg: rgba(14,26,19,0.95);
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.5);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  transition: background 0.2s, color 0.2s;
}

/* ---- Layout ---- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Header / Nav ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: background 0.2s, border-color 0.2s;
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--green-dark);
}

.logo-icon { font-size: 1.4rem; }
.logo-img { border-radius: 6px; display: block; }

/* Show/hide themed logo variants */
.logo-img-dark  { display: none; }
[data-theme="dark"] .logo-img-light { display: none; }
[data-theme="dark"] .logo-img-dark  { display: block; }

/* ---- Theme Switcher ---- */
.theme-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 3px;
  transition: background 0.2s, border-color 0.2s;
}

.theme-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
  padding: 4px 8px;
  border-radius: 100px;
  line-height: 1;
  transition: background 0.15s;
  opacity: 0.5;
}

.theme-btn:hover { opacity: 0.8; background: var(--border); }
.theme-btn.active { background: var(--surface); opacity: 1; box-shadow: 0 1px 3px rgba(0,0,0,0.15); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-strong);
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--green); }

.btn-nav {
  background: var(--green) !important;
  color: var(--white) !important;
  padding: 8px 20px;
  border-radius: 100px;
  font-weight: 600 !important;
  transition: background 0.2s !important;
}

.btn-nav:hover { background: var(--green-dark) !important; }

/* Dark-background sections: override text tokens so var(--text) stays white */
.hero,
.quote-section,
.support-hero,
.support-contact {
  --text: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.8);
  --text-strong: #ffffff;
}

/* ---- Hero ---- */
.hero {
  background: linear-gradient(160deg, var(--green-dark) 0%, var(--green) 50%, var(--green-mid) 100%);
  color: var(--white);
  padding: 80px 0 0;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: end;
}

.hero-text {
  padding-bottom: 80px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--gold-light);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
}

.hero-title .gold { color: var(--gold-light); }

.hero-subtitle {
  font-size: 1.2rem;
  opacity: 0.88;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  color: var(--green-dark);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 28px;
  border-radius: 100px;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.12);
  color: var(--white);
  font-weight: 600;
  font-size: 1rem;
  padding: 14px 28px;
  border-radius: 100px;
  text-decoration: none;
  border: 1.5px solid rgba(255,255,255,0.35);
  transition: background 0.2s;
}

.btn-secondary:hover { background: rgba(255,255,255,0.22); }

.hero-screenshots {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  justify-content: center;
}

.hero-screenshots picture {
  display: block;
  width: 220px;
  flex-shrink: 0;
}

.hero-screenshots picture:first-of-type {
  margin-bottom: 32px;
}

.hero-screenshots picture img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 28px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.35);
  border: 3px solid rgba(255,255,255,0.15);
}

/* ---- How it Works ---- */
.how-it-works {
  padding: 96px 0;
  background: var(--bg-alt);
}

.section-label {
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 12px;
}

.section-title {
  text-align: center;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
}

.section-subtitle {
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 56px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  text-align: center;
}

.step-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.step-number {
  display: inline-block;
  background: var(--green-dark);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  line-height: 28px;
  margin-bottom: 12px;
}

.step h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

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

/* ---- Features ---- */
.features {
  padding: 96px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 56px;
}

.feature-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.feature-card:hover {
  border-color: var(--green-light);
  box-shadow: var(--shadow);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

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

/* ---- Quote ---- */
.quote-section {
  background: linear-gradient(135deg, var(--green-dark), var(--green));
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}

.quote-text {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  font-style: italic;
  max-width: 740px;
  margin: 0 auto 20px;
  line-height: 1.4;
}

.quote-ref {
  font-size: 0.95rem;
  opacity: 0.75;
  font-weight: 600;
  letter-spacing: 0.05em;
}

/* ---- CTA ---- */
.cta-section {
  padding: 96px 0;
  text-align: center;
  background: var(--bg-alt);
}

.cta-section .section-title { margin-bottom: 12px; }
.cta-section .section-subtitle { margin-bottom: 36px; }

.app-store-badge {
  display: inline-block;
  transition: transform 0.2s, opacity 0.2s;
}

.app-store-badge:hover { transform: translateY(-2px); opacity: 0.9; }

.app-store-badge img { height: 56px; }

/* ---- Support Page ---- */
.support-hero {
  background: linear-gradient(160deg, var(--green-dark), var(--green));
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}

.support-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.support-hero p {
  font-size: 1.15rem;
  opacity: 0.88;
  max-width: 520px;
  margin: 0 auto;
}

.support-content {
  padding: 80px 0;
  max-width: 760px;
  margin: 0 auto;
}

.support-contact {
  background: var(--green-dark);
  color: var(--white);
  border-radius: var(--radius);
  padding: 48px 40px;
  text-align: center;
  margin-bottom: 64px;
}

.support-contact h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.support-contact p {
  opacity: 0.85;
  margin-bottom: 24px;
}

.btn-email {
  display: inline-block;
  background: var(--gold);
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 32px;
  border-radius: 100px;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}

.btn-email:hover { background: var(--gold-light); transform: translateY(-2px); color: var(--green-dark); }

.faq-section h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 32px;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}

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

.faq-item h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.faq-item p {
  color: var(--text-muted);
  font-size: 0.97rem;
}

.faq-item a {
  color: var(--green);
  font-weight: 600;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--green-dark);
  color: rgba(255,255,255,0.8);
  padding: 48px 0 32px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-brand .logo-text { color: var(--white); }
.footer-brand { display: flex; flex-direction: column; gap: 6px; }
.footer-brand-row { display: flex; gap: 8px; align-items: center; }
.footer-brand-row img { border-radius: 4px; }

.footer-brand p {
  font-size: 0.9rem;
  opacity: 0.7;
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

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

.footer-copy {
  font-size: 0.85rem;
  opacity: 0.5;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-text { padding-bottom: 40px; }

  .hero-screenshots {
    justify-content: center;
    padding-bottom: 40px;
  }

  .hero-screenshots picture { width: 160px; }

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

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

  .nav-links li:not(:last-child) { display: none; }

  .support-content { padding: 48px 24px; }

  .support-contact { padding: 36px 24px; }
}