/* ===== Tokens ===== */
:root {
  --bg: #F4FAF9;
  --surface: #FFFFFF;
  --surface-alt: #EAF6F4;
  --text: #0F2A2A;
  --text-muted: #4F7472;
  --border: #D8ECE9;
  --accent: #00B3A4;
  --accent-strong: #04867A;
  --accent-ink: #063F3C;
  --focus: #00B3A4;
  --danger: #B3441E;
  --shadow: 0 1px 2px rgba(6,63,60,0.06), 0 8px 24px -12px rgba(6,63,60,0.18);
  --radius: 10px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "Cascadia Code", "Consolas", "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #08201F;
    --surface: #0E2B29;
    --surface-alt: #123531;
    --text: #E6F5F3;
    --text-muted: #9EC7C2;
    --border: #1B3E3A;
    --accent: #2FE0CB;
    --accent-strong: #34C7B6;
    --accent-ink: #E6F5F3;
    --focus: #2FE0CB;
    --danger: #E08A63;
    --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px -12px rgba(0,0,0,0.5);
  }
}

:root[data-theme="dark"] {
  --bg: #08201F;
  --surface: #0E2B29;
  --surface-alt: #123531;
  --text: #E6F5F3;
  --text-muted: #9EC7C2;
  --border: #1B3E3A;
  --accent: #2FE0CB;
  --accent-strong: #34C7B6;
  --accent-ink: #E6F5F3;
  --focus: #2FE0CB;
  --danger: #E08A63;
  --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px -12px rgba(0,0,0,0.5);
}

/* ===== Base ===== */
* { box-sizing: border-box; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
body.no-scroll { overflow: hidden; }

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  color: var(--accent-ink);
  text-wrap: balance;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(1.9rem, 1.5rem + 1.8vw, 2.75rem); font-weight: 800; }
h2 { font-size: clamp(1.4rem, 1.2rem + 1vw, 1.9rem); font-weight: 800; }
h3 { font-size: 1.15rem; font-weight: 700; }
p { margin: 0 0 1em; color: var(--text); }
a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }

.eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 0.75em;
}

.muted { color: var(--text-muted); }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding-inline: 20px;
}
@media (min-width: 640px) {
  .container { padding-inline: 32px; }
}

.section { padding-block: 56px; }
.section-alt { background: var(--surface-alt); }
.section-tight { padding-block: 36px; }

/* ===== Nav ===== */
.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 40;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--accent-ink);
  white-space: nowrap;
}
.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  display: grid;
  place-items: center;
  color: #fff;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}
.nav-links a {
  color: var(--text);
  font-weight: 600;
  font-size: 0.92rem;
}
.nav-links a:hover { color: var(--accent-strong); text-decoration: none; }
.nav-links a.active { color: var(--accent-strong); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--accent-ink);
  font-size: 1rem;
}

@media (max-width: 760px) {
  .nav-links { position: absolute; top: 100%; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--border); flex-direction: column; align-items: flex-start; padding: 16px 20px; gap: 14px; display: none; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: inline-flex; }
  .nav-cta .btn span.btn-full { display: none; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 12px 22px;
  font-weight: 700;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.12s ease;
  line-height: 1;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent-strong);
  color: #ffffff;
  box-shadow: var(--shadow);
}
.btn-primary:hover { background: var(--accent-ink); text-decoration: none; }
.btn-secondary {
  background: transparent;
  color: var(--accent-ink);
  border-color: var(--border);
}
.btn-secondary:hover { border-color: var(--accent-strong); color: var(--accent-strong); text-decoration: none; background: var(--surface-alt); }
.btn-sm { padding: 8px 16px; font-size: 0.82rem; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.6; cursor: not-allowed; }

/* ===== Hero ===== */
.hero { padding-block: 64px 48px; }
.hero-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
@media (min-width: 860px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
}
.hero h1 { max-width: 18ch; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 26px; }
.hero-trust { margin-top: 22px; display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.85rem; color: var(--text-muted); }
.hero-trust span { display: flex; align-items: center; gap: 6px; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }

.hero-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-panel-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}
.hero-panel-bar .fname { margin-left: auto; }
.hero-panel pre {
  margin: 0;
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  overflow-x: auto;
  color: var(--text);
  white-space: pre;
}
.hero-panel pre .tc { color: var(--accent-strong); }
.hero-panel pre .idx { color: var(--text-muted); }

/* ===== Cards / grids ===== */
.grid {
  display: grid;
  gap: 20px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 860px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.card h3 { margin-bottom: 8px; }

.benefit-card { display: flex; flex-direction: column; gap: 10px; }
.benefit-icon {
  width: 38px; height: 38px;
  border-radius: 9px;
  background: var(--surface-alt);
  color: var(--accent-strong);
  display: grid; place-items: center;
  font-family: var(--font-mono);
  font-weight: 700;
}

/* ===== Steps ===== */
.steps { display: grid; gap: 18px; counter-reset: step; }
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
}
.step-num {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--accent-strong);
  color: #fff;
  display: grid; place-items: center;
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.step h4 { margin: 0 0 4px; font-size: 1rem; color: var(--accent-ink); }
.step p { margin: 0; color: var(--text-muted); }

/* ===== Format cards ===== */
.format-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.format-card-head {
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--border);
}
.format-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--accent-strong);
  background: var(--surface-alt);
  border-radius: 6px;
  padding: 3px 8px;
  margin-bottom: 10px;
}
.format-card p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 0; }
.format-code {
  margin: 0;
  padding: 16px 20px;
  background: var(--surface-alt);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  overflow-x: auto;
  white-space: pre;
  color: var(--text);
  flex: 1;
}
.format-actions {
  display: flex;
  gap: 10px;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}
.format-actions .btn { flex: 1; }

/* ===== Legal pages ===== */
.legal h2 { margin-top: 1.6em; }
.legal h2:first-of-type { margin-top: 0; }
.legal ul { padding-left: 1.2em; color: var(--text); }
.legal li { margin-bottom: 0.5em; }
.legal-meta {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: 20px;
  margin-bottom: 28px;
}
.company-box {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 1.4em 0;
  font-size: 0.94rem;
}
.company-box strong { color: var(--accent-ink); }
.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 30px;
}
.toc h3 { margin-bottom: 10px; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }
.toc ol { margin: 0; padding-left: 1.2em; columns: 2; column-gap: 24px; }
.toc li { break-inside: avoid; margin-bottom: 6px; }
.toc a { color: var(--text); font-size: 0.92rem; }
.toc a:hover { color: var(--accent-strong); }
@media (max-width: 620px) { .toc ol { columns: 1; } }

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface-alt);
  padding-block: 44px 28px;
}
.footer-grid {
  display: grid;
  gap: 32px;
  grid-template-columns: 1.3fr 1fr 1fr;
}
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: 12px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.footer-grid a { color: var(--text); font-size: 0.92rem; }
.footer-grid a:hover { color: var(--accent-strong); }
.footer-bottom {
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.footer-bottom button.link-btn {
  background: none; border: none; padding: 0; color: var(--text-muted); font-size: 0.82rem; cursor: pointer; text-decoration: underline;
}
.footer-bottom button.link-btn:hover { color: var(--accent-strong); }

/* ===== Cookie banner ===== */
.cookie-banner {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  z-index: 100;
  max-width: 720px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 20px 22px;
}
.cookie-banner p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 14px; }
.cookie-banner-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cookie-banner-actions .btn { flex: 1; min-width: 140px; }

/* ===== Modal (sample preview) ===== */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(6, 25, 24, 0.55);
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 200;
}
.modal {
  background: var(--surface);
  border-radius: 14px;
  border: 1px solid var(--border);
  max-width: 620px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-head h3 { margin: 0; }
.modal-close {
  background: none; border: none; font-size: 1.3rem; line-height: 1; cursor: pointer; color: var(--text-muted); padding: 4px 8px; border-radius: 6px;
}
.modal-close:hover { color: var(--accent-strong); background: var(--surface-alt); }
.modal-body { padding: 18px 20px; overflow-y: auto; }
.modal-body pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
}
.modal-foot { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; }
.copy-status { font-size: 0.82rem; color: var(--accent-strong); margin-right: auto; align-self: center; min-height: 1em; }

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--accent-ink);
  color: #fff;
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow);
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

[hidden] { display: none !important; }