/* Shared styles for support / privacy / terms pages — matches landing palette */

* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --color-primary: #2F8DFF;
  --color-primary-dark: #1a6fdb;
  --color-dark: #0A2E5C;
  --color-dark-light: #143d6e;
  --color-bg: #ffffff;
  --color-muted: #6b7280;
  --color-muted-light: #9ca3af;
  --color-border: #e5e7eb;
  --color-card-bg: #ffffff;
  --color-accent-bg: #f3f9ff;
  --font-sans: 'Inter', 'PingFang SC', 'LXGW WenKai TC', system-ui, sans-serif;
  --font-heading: 'Poppins', 'PingFang SC', 'LXGW WenKai TC', system-ui, sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: linear-gradient(180deg, #dbeeff 0%, #f0f7ff 30%, #ffffff 70%);
  color: #1a1a1a;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  line-height: 1.7;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); text-decoration: underline; }

/* Floating pill header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  padding: 10px 12px;
}
@media (min-width: 640px) { .site-header { padding: 12px 20px; } }
@media (min-width: 1024px) { .site-header { padding: 12px 32px; } }
.site-header-inner {
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 999px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.02);
  padding: 0 22px;
  height: 80px;
}
.site-logo {
  display: flex; align-items: center; gap: 10px;
  color: var(--color-dark); font-weight: 700; font-size: 16px;
}
.site-logo:hover { text-decoration: none; color: var(--color-dark); }
.site-logo img { height: 72px; width: auto; }
.site-nav { display: flex; align-items: center; gap: 24px; }
.site-nav a {
  color: rgba(10,46,92,0.75); font-weight: 600; font-size: 13px;
  letter-spacing: 0.02em;
  transition: color 0.15s;
}
.site-nav a:hover { color: var(--color-dark); text-decoration: none; }
/* Language dropdown */
.lang-wrap { position: relative; }
.lang-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 999px;
  border: none; background: transparent; color: rgba(10,46,92,0.55);
  cursor: pointer; transition: background 0.15s, color 0.15s;
}
.lang-toggle:hover,
.lang-toggle[aria-expanded="true"] { background: rgba(0,0,0,0.04); color: var(--color-dark); }
.lang-toggle svg { width: 18px; height: 18px; }

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 140px;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 12px;
  box-shadow: 0 8px 28px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.04);
  padding: 4px;
  display: none;
  z-index: 100;
}
.lang-menu.open { display: block; }
.lang-menu button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 9px 12px;
  border: none;
  background: transparent;
  color: rgba(10,46,92,0.75);
  font: inherit;
  font-size: 13px;
  text-align: left;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
}
.lang-menu button:hover { background: rgba(0,0,0,0.04); }
.lang-menu button.is-active { color: var(--color-dark); font-weight: 600; }
.lang-menu button .lang-check { opacity: 0; color: var(--color-primary); }
.lang-menu button.is-active .lang-check { opacity: 1; }

/* Hero */
.hero {
  padding: 120px 20px 48px;
  text-align: center;
  max-width: 900px; margin: 0 auto;
}
.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 700; color: var(--color-dark);
  line-height: 1.1; letter-spacing: -0.02em;
}
.hero .subtitle {
  font-size: 17px; color: var(--color-muted);
  margin-top: 16px;
}
.hero .gradient-line {
  width: 72px; height: 3px; margin: 28px auto 0;
  background: linear-gradient(90deg, var(--color-primary), #00b4d8);
  border-radius: 999px;
}

/* Content wrapper */
.content {
  max-width: 820px;
  margin: 0 auto;
  padding: 24px 20px 80px;
}

/* Contact cards (support page) */
.contact-info {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  margin-bottom: 32px;
}
.contact-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}
.contact-card h3 {
  font-family: var(--font-heading);
  font-size: 16px; font-weight: 600;
  color: var(--color-dark); margin-bottom: 10px;
}
.contact-card p { font-size: 14px; color: var(--color-muted); }

/* Form */
.form-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 32px;
  margin-bottom: 40px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03), 0 8px 24px -8px rgba(0,0,0,0.06);
}
.form-card h2 {
  font-family: var(--font-heading);
  font-size: 22px; font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 24px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 13px; font-weight: 600;
  color: var(--color-dark); margin-bottom: 8px;
}
.required { color: #ef4444; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  font-size: 14px; font-family: inherit;
  background: #f9fafb;
  color: #1a1a1a;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  transition: border-color 0.15s, background 0.15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #ffffff;
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group .hint {
  margin-top: 6px; font-size: 12px; color: var(--color-muted-light);
}
.submit-btn {
  padding: 12px 28px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
}
.submit-btn:hover { background: var(--color-primary-dark); transform: translateY(-1px); }
.submit-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* FAQ */
.faq-section h2 {
  font-family: var(--font-heading);
  font-size: 22px; font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 20px;
}
.faq-item {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
}
.faq-question {
  width: 100%;
  padding: 16px 20px;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 15px; font-weight: 500;
  color: var(--color-dark);
  cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  font-family: inherit;
}
.faq-question:hover { background: #f9fafb; }
.faq-chevron {
  font-size: 14px; color: var(--color-muted);
  transition: transform 0.2s;
}
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
  padding: 0 20px;
}
.faq-item.open .faq-answer { max-height: 500px; padding: 0 20px 16px; }
.faq-answer p { color: var(--color-muted); font-size: 14px; line-height: 1.7; }

/* Legal (privacy / terms) sections */
.legal-section { margin-bottom: 40px; }
.legal-section h2 {
  font-family: var(--font-heading);
  font-size: 22px; font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 16px;
}
.legal-section h3 {
  font-size: 16px; font-weight: 600;
  color: var(--color-dark-light);
  margin-top: 20px; margin-bottom: 8px;
}
.legal-section p {
  color: #374151; font-size: 15px; line-height: 1.75;
  margin-bottom: 12px;
}
.legal-section ul {
  color: #374151; font-size: 15px; line-height: 1.75;
  margin: 12px 0; padding-left: 24px;
}
.legal-section li { margin-bottom: 6px; }
.legal-meta {
  font-size: 13px; color: var(--color-muted);
  margin-bottom: 32px;
  padding: 12px 16px;
  background: var(--color-accent-bg);
  border-radius: 8px;
  border-left: 3px solid var(--color-primary);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 20px;
  background: #f9fafb;
}
.site-footer-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px;
}
.site-footer-left { font-size: 13px; color: var(--color-muted); }
.site-footer-links { display: flex; gap: 20px; }
.site-footer-links a {
  font-size: 13px; color: var(--color-muted);
}
.site-footer-links a:hover { color: var(--color-dark); text-decoration: none; }

/* Language toggle: hide the inactive language */
html[lang="en"] [data-lang="zh"] { display: none; }
html[lang="zh-CN"] [data-lang="en"] { display: none; }

/* Chinese typography: first-line indent for body paragraphs in legal sections */
html[lang="zh-CN"] .legal-section > p { text-indent: 2em; }
html[lang="zh-CN"] .legal-section h3 + p { text-indent: 2em; }
html[lang="zh-CN"] .legal-section ul,
html[lang="zh-CN"] .legal-section ol { padding-left: 32px; }

/* Responsive */
@media (max-width: 768px) {
  .site-header { padding: 10px 14px; }
  .site-header-inner { padding: 0 16px; height: 80px; }
  .site-nav { gap: 14px; }
  .site-nav a { font-size: 12px; }
  .hero { padding: 100px 16px 40px; }
  .hero h1 { font-size: 2rem; }
  .content { padding: 16px 16px 60px; }
  .contact-info { grid-template-columns: 1fr; }
  .form-card { padding: 22px; }
  .site-footer-inner { flex-direction: column; align-items: flex-start; }
}