/* ============================================================
   Aedificium AI — shared stylesheet
   ============================================================ */

:root {
  --bg: #FFFFFF;
  --bg-alt: #F5F8FC;
  --bg-card: #FFFFFF;
  --border: #E2E8F1;
  --text: #10182B;
  --text-muted: #4C5872;
  --text-faint: #94A0B8;
  --primary: #3B6FE0;
  --primary-light: #5B8AF5;
  --primary-dim: #EAF1FD;
  --accent: #F2A93B;
  --accent-dim: #FDF1DD;
  --success: #159A5D;
  --radius: 10px;
  --max-width: 1160px;
  --shadow: 0 12px 28px rgba(16, 24, 43, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Sora', 'Inter', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 16px; color: var(--text-muted); }

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

img { max-width: 100%; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 88px 0; }
@media (max-width: 640px) {
  section { padding: 56px 0; }
}

.section-alt { background: var(--bg-alt); }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.lede {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 640px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-light); }

.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--primary-light); color: var(--primary-light); }

.btn-accent {
  background: var(--accent);
  color: #1a1200;
}
.btn-accent:hover { background: #ffbe5c; }

.btn-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }

/* ---------- Header / Nav ---------- */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}
.logo:hover { text-decoration: none; }
.logo-mark {
  height: 32px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); text-decoration: none; }

.nav-cta { display: flex; align-items: center; gap: 20px; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 8px 10px;
  cursor: pointer;
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px;
    gap: 18px;
  }
}

/* ---------- Hero ---------- */
.hero {
  padding: 110px 0 90px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -220px; right: -220px;
  width: 640px; height: 640px;
  background: radial-gradient(circle, var(--primary-dim) 0%, transparent 72%);
  opacity: 1;
  pointer-events: none;
}
.hero-inner { position: relative; max-width: 720px; }
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}
.hero-stat .num {
  font-family: 'Sora', sans-serif;
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
}
.hero-stat .label {
  color: var(--text-faint);
  font-size: 0.88rem;
}

/* ---------- Cards / Grid ---------- */
.grid {
  display: grid;
  gap: 24px;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 860px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 1px 2px rgba(16, 24, 43, 0.04);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover { border-color: var(--primary-light); transform: translateY(-3px); box-shadow: var(--shadow); }

.card-icon {
  width: 44px; height: 44px;
  border-radius: 8px;
  background: var(--primary-dim);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
}

.card h3 { margin-bottom: 10px; }
.card p { margin-bottom: 0; font-size: 0.95rem; }

/* ---------- Section header ---------- */
.section-head { max-width: 640px; margin-bottom: 48px; }

/* ---------- Steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

.step { position: relative; padding-left: 0; }
.step-num {
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 2rem;
  color: var(--primary);
  opacity: 0.85;
  margin-bottom: 10px;
  display: block;
}

/* ---------- Pricing table ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 900px) { .pricing-grid { grid-template-columns: 1fr; } }

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}
.price-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  position: relative;
}
.price-card.featured::before {
  content: "MOST POPULAR";
  position: absolute;
  top: -12px; left: 28px;
  background: var(--primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 4px;
}
.price-amount {
  font-family: 'Sora', sans-serif;
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--text);
  margin: 12px 0 4px;
}
.price-amount span { font-size: 0.95rem; color: var(--text-faint); font-weight: 500; }
.price-card ul { list-style: none; padding: 0; margin: 20px 0 28px; flex-grow: 1; }
.price-card li {
  padding: 8px 0;
  border-top: 1px solid var(--border);
  font-size: 0.92rem;
  color: var(--text-muted);
  display: flex;
  gap: 10px;
}
.price-card li:first-child { border-top: none; }
.price-card li::before { content: "✓"; color: var(--success); font-weight: 700; }

/* ---------- Table (comparison) ---------- */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
th, td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
}
th {
  color: var(--text);
  font-family: 'Sora', sans-serif;
  font-weight: 600;
  background: var(--bg-alt);
}
tr.highlight td { background: rgba(59,111,224,0.08); color: var(--text); }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--primary);
  border-radius: 16px;
  padding: 56px;
  text-align: center;
  border: none;
}
.cta-band h2 { margin-bottom: 12px; color: #FFFFFF; }
.cta-band p { max-width: 520px; margin: 0 auto 8px; color: rgba(255,255,255,0.85); }
.cta-band .btn-row { justify-content: center; }
.cta-band .btn-outline { border-color: rgba(255,255,255,0.4); color: #FFFFFF; }
.cta-band .btn-outline:hover { border-color: #FFFFFF; color: #FFFFFF; }

/* ---------- Forms ---------- */
.form {
  display: grid;
  gap: 18px;
  max-width: 560px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }

label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-muted);
}
input, textarea, select {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary-light);
}
textarea { resize: vertical; min-height: 120px; }

.form-note { font-size: 0.85rem; color: var(--text-faint); }

/* ---------- Footer ---------- */
footer.site-footer {
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
  background: var(--bg-alt);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-bottom: 14px;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 10px; }
.footer-grid a { color: var(--text-muted); font-size: 0.92rem; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-faint);
}

/* ---------- Blog ---------- */
.post-card {
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}
.post-card:first-child { padding-top: 0; }
.post-meta {
  font-size: 0.82rem;
  color: var(--text-faint);
  margin-bottom: 8px;
}
.post-body {
  max-width: 720px;
}
.post-body h2 { margin-top: 40px; }
.post-body p { color: var(--text); }

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--primary-dim);
  color: var(--primary);
  padding: 4px 10px;
  border-radius: 4px;
}

/* ---------- Misc ---------- */
.divider { height: 1px; background: var(--border); margin: 48px 0; }

.center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

.form-success {
  display: none;
  background: rgba(21, 154, 93, 0.08);
  border: 1px solid var(--success);
  color: var(--success);
  padding: 16px 18px;
  border-radius: 8px;
  font-weight: 500;
}