/* Exchango AI — About / Privacy (DocPage shell)
 * Pair with: renewal-style.css (provides design tokens)
 */

body {
  background: var(--ink-950);
  color: #fff;
  font-family: var(--font-body);
}

/* ==========  DocPage shell ========== */
.doc-nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 64px;
  max-width: var(--max-nav); margin: 0 auto;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,10,11,0.85);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
}
.doc-nav-links {
  display: flex; align-items: center; gap: 32px;
  font-size: 14px; font-weight: 500;
}
.doc-nav-links a { color: var(--ink-300); transition: color .15s ease; }
.doc-nav-links a:hover { color: #fff; }

.doc-hero {
  padding: 100px 64px 60px;
  max-width: 920px;
  margin: 0 auto;
  position: relative;
}
.doc-hero::before {
  content: ""; position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 700px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(243,146,0,0.18) 0%, transparent 60%);
  pointer-events: none; z-index: 0;
}
.doc-hero-inner {
  position: relative; z-index: 1; text-align: center;
}
.doc-eyebrow {
  font-size: 13px; font-weight: 700;
  color: var(--amber-400);
  letter-spacing: 0.18em;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.doc-title {
  font-size: clamp(40px, 7vw, 88px);
  font-weight: 800; letter-spacing: -0.04em;
  line-height: 0.95;
  margin: 0 0 20px;
  text-wrap: balance;
}
.doc-updated {
  font-size: 14px; color: var(--ink-400);
  margin: 0;
}

.doc-content {
  padding: 20px 64px 120px;
  max-width: 820px;
  margin: 0 auto;
  position: relative; z-index: 1;
  font-size: 16px;
  line-height: 1.75;
  color: #D4D5DA;
}
.doc-content > p:first-child { margin-top: 0; }
.doc-content h2 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 56px 0 16px;
  color: #fff;
}
.doc-content h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  margin: 28px 0 10px;
  color: #fff;
}
.doc-content p { margin: 0 0 16px; }
.doc-content ul {
  margin: 0 0 16px;
  padding-left: 20px;
  display: flex; flex-direction: column; gap: 8px;
}
.doc-content strong { color: #fff; font-weight: 700; }
.doc-content a { color: var(--amber-400); text-decoration: underline; text-underline-offset: 2px; }
.doc-content a:hover { color: var(--amber-300); }

/* ==========  Cards ========== */
/* TL;DR (privacy) */
.tldr-card {
  margin: 32px 0;
  padding: 28px;
  background: linear-gradient(180deg, rgba(243,146,0,0.08) 0%, rgba(243,146,0,0.02) 100%);
  border: 1px solid rgba(243,146,0,0.25);
  border-radius: 20px;
}
.tldr-head {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 12px;
}
.tldr-head img { width: 28px; height: 28px; }
.tldr-head .label {
  font-size: 12px; font-weight: 700;
  color: var(--amber-400);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.tldr-card p { margin: 0; }

/* Contact card (privacy + about footer) */
.contact-card {
  padding: 24px;
  margin-top: 12px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  display: flex; flex-direction: column;
  gap: 8px;
  font-size: 15px;
}
.contact-card div { margin: 0; }

/* Stats row (about) */
.stats-row {
  display: flex; flex-wrap: wrap; gap: 16px;
  margin: 40px 0 56px;
}
.stat-card {
  flex: 1; min-width: 180px;
  padding: 32px 24px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  text-align: center;
}
.stat-card .num {
  font-size: 56px; font-weight: 800;
  letter-spacing: -0.04em; line-height: 1;
  background: linear-gradient(180deg, #fff 0%, #888A94 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-card .label {
  font-size: 11px; color: var(--ink-400);
  margin-top: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* Principles grid (about) */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin: 32px 0;
}
.principle-card {
  padding: 32px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 24px;
}
.principle-num {
  font-size: 13px; font-weight: 700;
  color: var(--amber-400);
  letter-spacing: 0.18em;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.principle-title {
  font-size: 24px; font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 12px;
}
.principle-desc {
  font-size: 15px;
  color: var(--ink-300);
  line-height: 1.6;
}

/* Feature list (about — 11 features) */
.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin: 32px 0 40px;
}
.feature-item {
  padding: 28px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  transition: border-color .2s ease, transform .15s ease;
}
.feature-item:hover {
  border-color: rgba(243,146,0,0.25);
  transform: translateY(-2px);
}
.feature-item .ftag {
  font-size: 11px; font-weight: 700;
  color: var(--amber-400);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.feature-item h3 {
  font-size: 20px; font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: #fff;
  margin: 0 0 10px;
}
.feature-item .fdesc {
  font-size: 14px;
  color: var(--ink-300);
  line-height: 1.6;
  margin: 0 0 14px;
}
.feature-item .fbullets {
  list-style: none;
  padding: 0; margin: 0;
  display: flex; flex-direction: column;
  gap: 6px;
}
.feature-item .fbullets li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 13px;
  color: var(--ink-300);
  line-height: 1.5;
}
.feature-item .fbullets li::before {
  content: "";
  flex-shrink: 0;
  width: 5px; height: 5px;
  border-radius: 999px;
  background: var(--amber-500);
  margin-top: 8px;
}

/* Currency grid (about — 3 categories; orphan auto-centers) */
.currency-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin: 32px 0 40px;
}
.currency-grid > .currency-card {
  flex: 1 1 260px;
  max-width: 360px;
}
.currency-card {
  padding: 28px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  text-align: center;
}
.currency-card h3 {
  font-size: 18px; font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
  color: #fff;
}
.currency-card .cdesc {
  font-size: 13px;
  color: var(--ink-300);
  line-height: 1.5;
  margin: 0 0 16px;
}
.currency-chips {
  display: flex; flex-wrap: wrap; gap: 6px;
  justify-content: center;
}
.currency-chip {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: #fff;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}

/* Tech grid (about — 6 items) */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin: 32px 0 40px;
}
.tech-card {
  padding: 22px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
}
.tech-card .tname {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}
.tech-card .tdesc {
  font-size: 13px;
  color: var(--ink-400);
  line-height: 1.5;
}

/* Team grid (about) */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 24px 0 40px;
}
.team-card {
  padding: 28px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 24px;
}
.team-avatar {
  width: 64px; height: 64px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 800;
  color: var(--ink-950);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.team-name { font-size: 18px; font-weight: 700; color: #fff; }
.team-role { font-size: 14px; color: var(--ink-400); margin-top: 4px; }

/* ==========  CTA ========== */
.doc-cta {
  padding: 100px 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.doc-cta::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 100%, rgba(243,146,0,0.25) 0%, transparent 70%);
  pointer-events: none;
}
.doc-cta-inner { position: relative; z-index: 1; }
.doc-cta-icon {
  width: 64px; height: 64px;
  margin: 0 auto;
  display: block;
}
.doc-cta h2 {
  font-size: 48px; font-weight: 800;
  letter-spacing: -0.03em; line-height: 1;
  margin: 20px 0 16px;
}
.doc-cta p {
  font-size: 16px;
  color: var(--ink-300);
  margin: 0 0 28px;
}
.doc-cta .store-row {
  display: inline-flex; gap: 10px;
  flex-wrap: wrap; justify-content: center;
}

/* ==========  Footer ========== */
.doc-footer {
  padding: 40px 64px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.doc-footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px;
  color: var(--ink-400);
  font-size: 13px;
}
.doc-footer-inner a {
  color: var(--ink-400);
  transition: color .15s ease;
}
.doc-footer-inner a:hover { color: #fff; }
.doc-footer-links { display: flex; gap: 24px; }

/* ==========  Mobile ========== */
@media (max-width: 768px) {
  .doc-nav { padding: 14px 20px; }
  /* Compact logo on mobile */
  .doc-nav .logo { --logo-size: 32px; }
  .doc-nav .logo-tagline { margin-top: 4px; }

  /* Mobile menu panel — slides down from nav */
  .doc-nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px 20px 20px;
    background: var(--ink-950);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 12px 32px -12px rgba(0,0,0,0.6);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .22s ease, transform .22s ease;
    font-size: 15px;
  }
  .doc-nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .doc-nav-links a {
    display: block;
    padding: 12px 14px;
    border-radius: 10px;
    color: var(--ink-200);
  }
  .doc-nav-links a:hover,
  .doc-nav-links a:focus { background: rgba(255,255,255,0.06); color: #fff; }
  .doc-nav-links .nav-only-desktop { display: block; }

  .doc-hero { padding: 56px 20px 32px; }
  .doc-title { font-size: 36px; }
  .doc-content { padding: 12px 20px 80px; font-size: 15px; line-height: 1.7; }
  .doc-content h2 { font-size: 24px; margin: 40px 0 12px; }
  .doc-content h3 { font-size: 16px; margin: 22px 0 8px; }

  .stats-row { gap: 10px; margin: 32px 0 40px; flex-wrap: nowrap; }
  .stat-card { padding: 22px 10px; min-width: 0; flex: 1 1 0; }
  .stat-card .num { font-size: 30px; }
  .stat-card .label { font-size: 9px; margin-top: 8px; letter-spacing: 0.08em; }

  .principle-card { padding: 24px; border-radius: 20px; }
  .principle-title { font-size: 20px; }

  .team-card { padding: 22px; }
  .team-avatar { width: 52px; height: 52px; font-size: 18px; }

  .tldr-card { padding: 22px; border-radius: 18px; }
  .contact-card { padding: 20px; }

  .doc-cta { padding: 64px 20px; }
  .doc-cta h2 { font-size: 32px; }

  .doc-footer { padding: 28px 20px; }
  .doc-footer-inner { flex-direction: column; align-items: flex-start; gap: 14px; }
}

@media (max-width: 380px) {
  .doc-nav { padding: 12px 16px; }
  .doc-nav .logo { --logo-size: 28px; gap: 8px; }
  .doc-hero { padding: 40px 18px 28px; }
  .doc-title { font-size: 30px; }
  .doc-content { padding: 12px 18px 70px; font-size: 14px; }
  .doc-content h2 { font-size: 22px; margin: 32px 0 10px; }
  .doc-content h3 { font-size: 15px; }
  .stat-card { padding: 18px 6px; min-width: 0; }
  .stat-card .num { font-size: 24px; }
  .stat-card .label { font-size: 8px; letter-spacing: 0.06em; }
  .feature-item { padding: 20px; }
  .currency-card { padding: 22px; }
  .doc-cta { padding: 56px 18px 44px; }
  .doc-cta h2 { font-size: 28px; }
  .doc-footer { padding: 24px 18px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .doc-nav { padding: 16px 32px; }
  .doc-hero { padding: 72px 32px 48px; }
  .doc-content { padding: 16px 32px 96px; }
  .doc-cta { padding: 80px 32px; }
  .doc-footer { padding: 32px; }
}