/* ============================================================
   CompareIt+ static site — shared styles (privacy / terms / support)
   Design: mobile-app frame · Prompt font · emerald green theme
   ============================================================ */

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

:root {
  --bg:             #F7F6F3;
  --surface-var:    #EBF5EF;
  --primary:        #1A7A5A;
  --primary-dark:   #0F5A40;
  --primary-cont:   #C8EBD8;
  --text:           #1C1917;
  --muted:          #57534E;
  --surface:        #FFFFFF;
  --border:         #D8E8E0;
  --divider:        #DDE8E2;

  --font: 'Prompt', 'Noto Sans Thai', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: #E4ECE7;
  min-height: 100vh;
  color: var(--text);
  line-height: 1.7;
}

/* ── App shell (mobile-app frame) ── */
.app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(160deg, var(--bg) 0%, #DFF0E6 100%);
  box-shadow: 0 0 50px rgba(26, 122, 90, 0.12);
}

/* ── Top app bar ── */
.appbar {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: 61px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  padding-top: max(12px, env(safe-area-inset-top));
  background: rgba(247, 246, 243, 0.85);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
  text-decoration: none;
  min-width: 0;
}
.brand-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(26, 122, 90, 0.3);
}
.brand-mark img { width: 100%; height: 100%; display: block; object-fit: cover; }
.brand-name {
  font-family: var(--font);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--primary-dark);
}

/* ── Lang toggle ── */
.lang-toggle {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border);
  border-radius: 999px;
  flex-shrink: 0;
}
.lang-btn {
  padding: 5px 13px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.18s, color 0.18s;
}
.lang-btn.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 1px 5px rgba(26, 122, 90, 0.4);
}
.lang-btn:hover:not(.active) { color: var(--primary-dark); }

/* ── Screen ── */
main.screen {
  flex: 1;
  padding: 22px 16px 28px;
}
.screen-head {
  text-align: center;
  padding: 6px 6px 20px;
}
.screen-head h1 {
  font-family: var(--font);
  font-size: clamp(22px, 6vw, 28px);
  font-weight: 700;
  color: var(--primary-dark);
  letter-spacing: -0.2px;
}
.updated,
.subtitle {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--muted);
}

.card {
  background: var(--surface);
  border-radius: 20px;
  padding: 22px;
  box-shadow: 0 4px 24px rgba(26, 122, 90, 0.08);
}

/* ── Content sections ── */
.content { display: none; }
.content.active { display: block; }

section + section { margin-top: 36px; }

section h2 {
  font-family: var(--font);
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-cont);
  margin-bottom: 16px;
}

p { font-size: 15.5px; color: var(--text); }
p + p { margin-top: 12px; }

ul {
  padding-left: 20px;
  margin-top: 10px;
}
ul li {
  font-size: 15.5px;
  color: var(--text);
  margin-bottom: 6px;
}
ul li::marker { color: var(--primary); }

.highlight {
  background: var(--surface-var);
  border-left: 3px solid var(--primary);
  border-radius: 0 8px 8px 0;
  padding: 14px 18px;
  margin-top: 16px;
  font-size: 15px;
}

a { color: var(--primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Support: contact box ── */
.contact-box {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--surface-var);
  border: 1.5px solid var(--primary-cont);
  border-radius: 16px;
  padding: 22px 24px;
  margin-bottom: 36px;
}
.contact-icon {
  font-size: 36px;
  flex-shrink: 0;
  line-height: 1;
}
.contact-box > div { min-width: 0; }
.contact-label {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 4px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.contact-email {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
  word-break: break-word;
}
.contact-email a { color: inherit; text-decoration: none; }
.contact-email a:hover { text-decoration: underline; }
.contact-note { font-size: 14px; color: var(--muted); margin-top: 4px; }

/* ── Support: FAQ ── */
.faq-item { margin-bottom: 20px; }
.faq-q {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}
.faq-a { font-size: 15px; color: var(--muted); }

.copyright {
  text-align: center;
  padding: 22px 12px 6px;
  font-size: 12px;
  color: var(--muted);
}

/* ── Bottom tab bar ── */
.tabbar {
  position: sticky;
  bottom: 0;
  z-index: 50;
  min-height: 56px;
  display: flex;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}
.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 9px 4px 8px;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s;
}
.tab svg { width: 23px; height: 23px; stroke: currentColor; fill: none; }
.tab:hover { color: var(--primary-dark); text-decoration: none; }
.tab.active { color: var(--primary-dark); }
.tab.active svg { stroke: var(--primary); }

/* ── Embedded in mobile WebView (?source=app) ── */
:root.embedded .appbar { display: none; }
:root.embedded .tabbar { display: none; }
:root.embedded main.screen { padding-top: 8px; }

/* ── Narrow phones ── */
@media (max-width: 360px) {
  .brand-name { font-size: 17px; }
  .lang-btn { padding: 5px 11px; }
  main.screen { padding: 18px 12px 24px; }
  .card { padding: 18px; }
}
@media (max-width: 600px) {
  .contact-box {
    gap: 14px;
    padding: 18px 18px;
    margin-bottom: 28px;
  }
  .contact-icon { font-size: 30px; }
  .contact-email { font-size: 16px; }
  .faq-a { font-size: 14.5px; }
}

/* ── Dark mode (opt-in via ?mode=dark) ── */
.brand-mark img.mark-dark { display: none; }
:root.dark {
  color-scheme: dark;
  --bg:           #141413;
  --surface-var:  #262E28;
  --primary:      #5BBFA3;
  --primary-dark: #9DE5C4;
  --primary-cont: #0E3825;
  --text:         #E8E6E0;
  --muted:        #8F8C84;
  --surface:      #1F1F1E;
  --border:       #2A3A30;
  --divider:      #263028;
}
:root.dark body { background: #0E120F; }
:root.dark .app { box-shadow: 0 0 50px rgba(0, 0, 0, 0.5); }
:root.dark .app { background: linear-gradient(160deg, #141413 0%, #0E1A13 100%); }
:root.dark .appbar { background: rgba(20, 20, 19, 0.85); }
:root.dark .lang-toggle { background: rgba(255, 255, 255, 0.06); }
:root.dark .tabbar { background: rgba(31, 31, 30, 0.94); }
:root.dark .highlight { background: rgba(91, 191, 163, 0.1); }
:root.dark .contact-box { background: rgba(91, 191, 163, 0.08); border-color: var(--primary-cont); }
:root.dark .lang-btn.active { background: var(--primary); color: #141413; }
:root.dark .brand-mark img.mark-light { display: none; }
:root.dark .brand-mark img.mark-dark { display: block; }