/* ── Reset & Base ────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { margin: 0; overflow-x: hidden; }
img { display: block; max-width: 100%; }

/* ── Custom Scrollbar ────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #FAF8F4; }
::-webkit-scrollbar-thumb { background: #2D5A3D; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #3a633e; }

/* ── Section Label ───────────────────────────────────── */
.section-label {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #2D5A3D;
  font-weight: 500;
}

/* ── Nav Link Underline ──────────────────────────────── */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: #2D5A3D;
  transition: width 0.3s ease;
}
.nav-link:hover::after {
  width: 100%;
}

/* ── Mobile Link ─────────────────────────────────────── */
.mobile-link {
  opacity: 1;
  transition: color 0.3s ease;
}
.mobile-link:hover {
  color: #4a7d4f;
}

/* ── Reveal Animations (progressive enhancement) ─────── */
@media (prefers-reduced-motion: no-preference) {
  .reveal-up,
  .reveal-left,
  .reveal-right {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .reveal-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .reveal-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .reveal-up.revealed,
  .reveal-left.revealed,
  .reveal-right.revealed {
    opacity: 1;
    transform: none;
  }
}

/* ── Hero Animations ─────────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .hero-tag {
    animation: fadeDown 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
  }
  .hero-title {
    animation: fadeUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
  }
  .hero-subtitle {
    animation: fadeUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.6s both;
  }
  .hero-cta {
    animation: fadeUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.8s both;
  }
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Header Scroll State ─────────────────────────────── */
#site-header.scrolled {
  background: rgba(250, 248, 244, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(45, 90, 61, 0.08);
}
#site-header.scrolled .nav-link {
  color: #2D5A3D;
}
#site-header.scrolled .nav-link::after {
  background: #2D5A3D;
}
#site-header.scrolled .font-serif {
  color: #1c3a27;
}

/* ── Smooth anchor offset ────────────────────────────── */
section[id] {
  scroll-margin-top: 80px;
}

/* ── Focus styles ────────────────────────────────────── */
a:focus-visible,
button:focus-visible {
  outline: 2px solid #2D5A3D;
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Selection ───────────────────────────────────────── */
::selection {
  background: #2D5A3D;
  color: #FAF8F4;
}