/* ========================================
   heitto support site — style.css
   ======================================== */

:root {
  --bg: #080C08;
  --surface: #141A15;
  --surface-light: #212B22;
  --border: #2D382E;
  --accent: #A3E635;
  --accent-dark: #84CC16;
  --text-primary: #FFFFFF;
  --text-secondary: #A0A0A0;
  --text-muted: #666666;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ── Layout ── */
.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header / Nav ── */
header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(8, 12, 8, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.15s;
}

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

/* ── Hero ── */
.hero {
  text-align: center;
  padding: 80px 0 64px;
}

.hero-icon {
  width: 80px;
  height: 80px;
  border-radius: 18px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.hero-tagline {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

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

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

/* ── Section common ── */
section {
  padding: 64px 0;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 32px;
  letter-spacing: -0.01em;
}

/* ── Features ── */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--accent);
}

.feature-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

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

/* ── FAQ ── */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  font-size: 20px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform 0.2s;
}

details[open] summary::after {
  content: "-";
}

details .faq-answer {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Contact ── */
.contact-text {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 12px;
}

.contact-email {
  font-size: 16px;
  font-weight: 500;
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 13px;
}

/* ========================================
   Privacy page
   ======================================== */

.privacy-header {
  padding: 48px 0 32px;
  border-bottom: 1px solid var(--border);
}

.privacy-header h1 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
}

.privacy-meta {
  color: var(--text-muted);
  font-size: 14px;
}

.lang-switch {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.lang-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 16px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.lang-btn:hover {
  background: var(--surface-light);
}

.lang-btn.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  font-weight: 600;
}

.privacy-content {
  padding: 40px 0;
}

.privacy-content h2 {
  font-size: 20px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
}

.privacy-content h2:first-child {
  margin-top: 0;
}

.privacy-content p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 16px;
}

.privacy-content ul {
  color: var(--text-secondary);
  font-size: 15px;
  padding-left: 20px;
  margin-bottom: 16px;
}

.privacy-content li {
  margin-bottom: 4px;
}

.privacy-content strong {
  color: var(--text-primary);
}

.lang-content {
  display: none;
}

.lang-content.active {
  display: block;
}

/* ── Back link ── */
.back-link {
  display: inline-block;
  margin-top: 32px;
  color: var(--text-secondary);
  font-size: 14px;
}

.back-link:hover {
  color: var(--text-primary);
}