/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 17px; }

/* ── TOKENS ── */
:root {
  --bg:     #f0ede7;
  --text:   #141210;
  --muted:  #5c5752;
  --border: #d5d0c8;
  --faint:  #9c9690;
  --warm:   #b08d72;
  --error:  #b33a2f;
  --font-heading: 'Inter', sans-serif;
  --font-body:    'Public Sans', sans-serif;
  --font-mono:    'DM Mono', monospace;
  --max:  980px;
  --pad:  clamp(1.25rem, 4.5vw, 4rem);
  --nav:  74px;
}

/* ── BASE ── */
body {
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

/* ── NAV (solid — default for all inner pages) ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: var(--nav);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--pad);
  background: rgba(240,237,231,0.96);
  backdrop-filter: blur(12px);
  transition: opacity 0.45s ease;
}
nav.hidden { opacity: 0; pointer-events: none; }

.nav-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--text);
}
.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 2.25rem;
}
.nav-links a {
  font-size: 0.92rem;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); font-weight: 500; }
.nav-icon {
  display: flex; align-items: center;
  color: var(--muted);
  transition: color 0.2s;
}
.nav-icon:hover { color: var(--text); }

/* ── PAGE HEADER (base — shared by portfolio, case, contact) ── */
.page-header {
  max-width: var(--max);
  margin: 0 auto;
  padding: calc(var(--nav) + clamp(3.5rem, 7vw, 6rem)) var(--pad) clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--border);
}
.page-kicker {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 0.9rem;
}
.page-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 2.25rem var(--pad);
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
footer span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--faint);
  letter-spacing: 0.06em;
}
.footer-links { display: flex; gap: 1.5rem; align-items: center; }
.footer-links a {
  font-size: 0.8rem;
  color: var(--muted);
  transition: color 0.15s;
  display: flex; align-items: center; gap: 0.3rem;
}
.footer-links a:hover { color: var(--text); }

/* ── REVEAL ── */
.r { opacity: 0; transform: translateY(16px); transition: opacity 0.55s ease, transform 0.55s ease; }
.r.in { opacity: 1; transform: none; }

/* ── HAMBURGER ── */
.nav-toggle {
  display: none;
  position: relative;
  width: 36px; height: 36px;
  background: none; border: none;
  padding: 0; cursor: pointer;
  color: var(--muted);
  transition: color 0.2s;
  z-index: 220;
}
nav.open .nav-toggle { color: var(--text); }
.nav-toggle span {
  position: absolute; left: 7px;
  display: block;
  width: 22px; height: 1.5px;
  background: currentColor;
  transition: transform 0.3s ease, opacity 0.2s ease, top 0.3s ease;
}
.nav-toggle span:nth-child(1) { top: 13px; }
.nav-toggle span:nth-child(2) { top: 18px; }
.nav-toggle span:nth-child(3) { top: 23px; }
nav.open .nav-toggle span:nth-child(1) { top: 18px; transform: rotate(45deg); }
nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
nav.open .nav-toggle span:nth-child(3) { top: 18px; transform: rotate(-45deg); }

.nav-social { display: contents; }

/* ── BACKDROP ── */
.nav-backdrop {
  position: fixed; inset: 0;
  background: rgba(20,18,16,0.45);
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 190;
}
.nav-backdrop.open { opacity: 1; pointer-events: auto; }

body.no-scroll, html.no-scroll { overflow: hidden; }

/* ── RESPONSIVE NAV DRAWER ── */
@media (max-width: 720px) {
  .nav-toggle { display: block; }

  .nav-links {
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    height: 100dvh;
    width: 100vw;
    background: var(--bg);
    flex-direction: column;
    align-items: stretch;
    padding: calc(var(--nav) + 1.25rem) var(--pad) 2rem;
    gap: 0;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 200;
    overflow-y: auto;
  }
  nav.open .nav-links { transform: translateX(0); }

  .nav-links > li:not(.nav-social) { border-bottom: 1px solid var(--border); }
  .nav-links > li:not(.nav-social) a {
    display: block;
    color: var(--text);
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 500;
    padding: 1.2rem 0;
    letter-spacing: 0.01em;
  }
  .nav-links > li:not(.nav-social) a.active { font-weight: 700; }

  .nav-social {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-top: auto;
    padding-top: 2rem;
  }
  .nav-social .nav-icon {
    color: var(--muted);
    width: 24px; height: 24px;
    display: inline-flex; align-items: center; justify-content: center;
  }
  .nav-social .nav-icon:hover { color: var(--text); }
}

@media (max-width: 480px) { .nav-name { font-size: 0.92rem; } }
@media (max-width: 360px) { .nav-name { font-size: 0.82rem; } }