/* AirloHub — main.css — STACK_PROFILE=customcss */
:root {
  --color-primary: #1b1b2f;
  --color-accent: #e94560;
  --color-bg: #f5f0f7;
  --color-text: #0d0d1a;
  --color-surface: #ffffff;
  --color-border: #d0d8e4;
  --color-muted: #6b7a8d;
  --font-main: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Courier New", Courier, monospace;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --max-w: 1200px;
  --sidebar-w: 260px;
  --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Utility bar nav ── */
.utilitybar {
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 2rem;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}
.nav-brand a {
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}
.nav-links {
  display: flex;
  gap: 0.25rem;
  flex: 1;
  flex-wrap: wrap;
}
.nav-links a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  padding: 0.3rem 0.65rem;
  border-radius: 4px;
  font-size: 0.875rem;
  transition: background var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  background: rgba(255,255,255,0.18);
  color: #fff;
}
.btn-cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 0.4rem 1rem !important;
  border-radius: var(--radius) !important;
  font-weight: 600;
  white-space: nowrap;
}
.btn-cta:hover { opacity: 0.9; }

/* ── Layout: sidebar ── */
.page-wrap {
  display: flex;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
  flex: 1;
  gap: 2rem;
  padding: 2rem 1.5rem;
}
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
}
.sidebar nav {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  position: sticky;
  top: 76px;
}
.sidebar nav h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-bottom: 0.75rem;
}
.sidebar nav a {
  display: block;
  color: var(--color-text);
  text-decoration: none;
  padding: 0.35rem 0.5rem;
  border-radius: 4px;
  font-size: 0.9rem;
  transition: background var(--transition);
}
.sidebar nav a:hover { background: var(--color-bg); color: var(--color-primary); }
.main-content { flex: 1; min-width: 0; }

/* ── Typography ── */
h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); color: var(--color-primary); margin-bottom: 1rem; line-height: 1.25; }
h2 { font-size: clamp(1.25rem, 3vw, 1.8rem); color: var(--color-primary); margin: 2rem 0 0.75rem; }
h3 { font-size: 1.15rem; color: var(--color-primary); margin: 1.5rem 0 0.5rem; }
h4 { font-size: 1rem; color: var(--color-primary); margin: 1rem 0 0.4rem; }
p { margin-bottom: 1rem; }
a { color: var(--color-accent); }
a:hover { text-decoration: underline; }
ul, ol { margin: 0.5rem 0 1rem 1.5rem; }
li { margin-bottom: 0.35rem; }

/* ── Hero ── */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, color-mix(in srgb, var(--color-primary) 70%, var(--color-accent)) 100%);
  color: #fff;
  padding: 4rem 2rem;
  text-align: center;
  margin-bottom: 2rem;
}
.hero h1 { color: #fff; font-size: clamp(1.8rem, 5vw, 3rem); }
.hero p { font-size: 1.15rem; opacity: 0.9; max-width: 700px; margin: 1rem auto; }
.hero .btn-primary {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: 0.75rem 2rem;
  border-radius: var(--radius);
  font-weight: 700;
  text-decoration: none;
  margin-top: 1rem;
  transition: opacity var(--transition);
}
.hero .btn-primary:hover { opacity: 0.88; }
.hero img { max-width: 480px; width: 100%; margin-top: 2rem; border-radius: var(--radius); }

/* ── Cards ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(0,0,0,0.12); }
.card img { width: 64px; height: 64px; margin-bottom: 1rem; }
.card h3 { margin-top: 0; }

/* ── Tables ── */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
thead { background: var(--color-primary); color: #fff; }
th, td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--color-border); }
tr:last-child td { border-bottom: none; }
tr:nth-child(even) td { background: rgba(0,0,0,0.02); }
.check { color: #27ae60; font-weight: 700; }
.cross { color: #e74c3c; font-weight: 700; }

/* ── Details / FAQ ── */
details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  background: var(--color-surface);
}
summary {
  padding: 1rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
summary::after { content: "+"; font-size: 1.25rem; color: var(--color-accent); }
details[open] summary::after { content: "−"; }
details > *:not(summary) { padding: 0 1.25rem 1rem; }

/* ── Glossary ── */
.glossary { margin: 1.5rem 0; }
.glossary dt {
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 1rem;
  font-size: 1rem;
}
.glossary dd { margin-left: 1.5rem; color: var(--color-muted); margin-bottom: 0.5rem; }

/* ── Timeline ── */
.timeline { list-style: none; margin: 1.5rem 0; padding: 0; position: relative; }
.timeline::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0; bottom: 0;
  width: 3px;
  background: var(--color-border);
}
.timeline li {
  position: relative;
  padding: 0.75rem 0 0.75rem 3.5rem;
  margin-bottom: 0.5rem;
}
.timeline li::before {
  content: attr(data-step);
  position: absolute;
  left: 0;
  top: 0.75rem;
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

/* ── Aside / Alert ── */
aside.info-box {
  background: color-mix(in srgb, var(--color-accent) 12%, white);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
aside.warning-box {
  background: #fff8e1;
  border-left: 4px solid #f39c12;
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.terms-on-page {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin: 1rem 0;
  font-size: 0.875rem;
}
.terms-on-page h4 { margin: 0 0 0.4rem; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-muted); }

/* ── Reviews ── */
.review-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; margin: 1.5rem 0; }
.review-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.review-card .reviewer { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.review-card img { width: 56px; height: 56px; border-radius: 50%; }
.review-card .stars { color: #f39c12; font-size: 1.1rem; }
blockquote { border-left: 3px solid var(--color-accent); padding-left: 1rem; color: var(--color-muted); font-style: italic; margin: 1rem 0; }

/* ── Pricing ── */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; margin: 1.5rem 0; }
.pricing-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: border-color var(--transition);
}
.pricing-card.featured { border-color: var(--color-accent); }
.pricing-card .price { font-size: 2.5rem; font-weight: 700; color: var(--color-primary); }
.pricing-card .price span { font-size: 1rem; font-weight: 400; color: var(--color-muted); }
.pricing-card ul { list-style: none; margin: 1rem 0; text-align: left; }
.pricing-card ul li { padding: 0.3rem 0; border-bottom: 1px solid var(--color-border); }
.pricing-card .btn-plan {
  display: block;
  background: var(--color-primary);
  color: #fff;
  padding: 0.65rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  margin-top: 1.5rem;
  transition: opacity var(--transition);
}
.pricing-card .btn-plan:hover { opacity: 0.85; }
.pricing-card.featured .btn-plan { background: var(--color-accent); }

/* ── Checklist ── */
.checklist { list-style: none; margin: 1rem 0; }
.checklist li { padding: 0.4rem 0; padding-left: 1.75rem; position: relative; }
.checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--color-accent); font-weight: 700; }

/* ── Form ── */
.contact-form { max-width: 640px; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.4rem; font-size: 0.9rem; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-main);
  font-size: 1rem;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition);
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 20%, transparent);
}
.form-group textarea { min-height: 130px; resize: vertical; }
.form-error { color: #e74c3c; font-size: 0.82rem; margin-top: 0.3rem; display: none; }
.form-group.has-error input, .form-group.has-error textarea { border-color: #e74c3c; }
.form-group.has-error .form-error { display: block; }
.btn-submit {
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 0.75rem 2rem;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition);
}
.btn-submit:hover { opacity: 0.85; }
.checkbox-group { display: flex; gap: 0.75rem; align-items: flex-start; }
.checkbox-group input { width: auto; margin-top: 0.25rem; }

/* ── Cookie banner ── */
#cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  z-index: 9999;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.2);
}
#cookie-banner p { margin: 0; flex: 1; font-size: 0.9rem; }
#cookie-banner button {
  background: var(--color-accent);
  color: #fff;
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-weight: 600;
  white-space: nowrap;
}

/* ── TOC ── */
.toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}
.toc h4 { margin: 0 0 0.75rem; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--color-muted); }
.toc ol { margin: 0; padding-left: 1.25rem; }
.toc li { margin-bottom: 0.3rem; }
.toc a { color: var(--color-primary); font-size: 0.9rem; }

/* ── Figure ── */
figure { margin: 1.5rem 0; text-align: center; }
figure img { max-width: 100%; border-radius: var(--radius); box-shadow: var(--shadow); }
figcaption { font-size: 0.85rem; color: var(--color-muted); margin-top: 0.5rem; }

/* ── Footer ── */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.85);
  padding: 3rem 2rem 1.5rem;
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  max-width: var(--max-w);
  margin: 0 auto 2rem;
}
.footer-grid h4 { color: #fff; margin-bottom: 0.75rem; }
.footer-grid a { color: rgba(255,255,255,0.75); text-decoration: none; }
.footer-grid a:hover { color: #fff; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 0.4rem; }
.footer-grid address { font-style: normal; font-size: 0.875rem; line-height: 1.6; }
.small { font-size: 0.8rem; opacity: 0.65; margin-top: 1rem; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .page-wrap { flex-direction: column; padding: 1rem; }
  .sidebar { width: 100%; }
  .sidebar nav { position: static; }
  .utilitybar { height: auto; flex-wrap: wrap; padding: 0.75rem 1rem; gap: 0.5rem; }
  .nav-links { flex-wrap: wrap; }
  .hero { padding: 2.5rem 1rem; }
}
@media (max-width: 480px) {
  h1 { font-size: 1.5rem; }
  .card-grid, .review-grid, .pricing-grid { grid-template-columns: 1fr; }
}

/* ── Skip link ── */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 9999;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { top: 0; }