/* ─────────────────────────────────────────
   base.css
   Reset, typography, global utilities
───────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ── Layout helpers ── */
main {
  padding-top: var(--nav-h);
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}

.section:last-child {
  border-bottom: none;
}

.section-alt {
  background: var(--bg2);
}

/* ── Section header ── */
.section-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 2.5rem;
}

.eyebrow-num {
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  color: var(--blue);
  background: var(--blue-light);
  padding: 3px 9px;
  border-radius: 4px;
  border: 1px solid var(--blue-mid);
}

.eyebrow-title {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}

.eyebrow-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--blue);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 22px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
}

.btn-primary:hover {
  background: var(--blue-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 22px;
  border-radius: 8px;
  text-decoration: none;
  border: 1px solid var(--border2);
  transition: all 0.15s;
}

.btn-secondary:hover {
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-1px);
}

/* ── Fade-in animation ── */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ── Responsive ── */
@media (max-width: 820px) {
  .container { padding: 0 1.5rem; }
}

@media (max-width: 520px) {
  .container { padding: 0 1.25rem; }
}