/* ==========================================================================
   Rob McQuade — Shared Styles
   robmcquade.com
   ========================================================================== */

/* --- RESET & VARIABLES --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --ink: #1c1f26;
  --ink-light: #4a4d55;
  --ink-mid: #3a3d45;
  --stone: #e8e2d9;
  --stone-light: #f4f1ec;
  --warm-white: #faf8f5;
  --copper: #9e7c5a;
  --copper-dark: #7d6248;
  --copper-light: #b8956d;
  --copper-glow: rgba(158, 124, 90, 0.08);
  --rule: #d4cfc7;
  --serif: 'Instrument Serif', Georgia, serif;
  --sans: 'DM Sans', system-ui, sans-serif;
}

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

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--warm-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Subtle grain overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 9999;
}

/* --- BASE TYPOGRAPHY --- */
a { color: var(--copper-dark); transition: color 0.3s; }
a:hover { color: var(--ink); }

.prose {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--ink-light);
  max-width: 660px;
}

.prose p + p { margin-top: 1.4rem; }
.prose em { color: var(--ink-mid); font-style: italic; }

/* --- ACCESSIBILITY --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--ink);
  color: var(--warm-white);
  font-size: 0.88rem;
  text-decoration: none;
  z-index: 200;
  border-radius: 0 0 4px 4px;
}

.skip-link:focus { top: 0; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--copper-dark);
  outline-offset: 3px;
}

/* --- NAV --- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}

nav.scrolled {
  background: rgba(250, 248, 245, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--rule);
}

.nav-name {
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}

.nav-links { display: flex; gap: 2rem; list-style: none; }

.nav-links a {
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--ink-light);
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-links a:hover { color: var(--copper); }
.nav-links a.active { color: var(--copper-dark); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--ink);
}

.nav-toggle svg { width: 22px; height: 22px; }

/* --- SECTIONS --- */
section { padding: 7rem 2rem; }
section[id] { scroll-margin-top: 3.5rem; }
.section-inner { max-width: 860px; margin: 0 auto; }

.section-label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--copper-dark);
  margin-bottom: 1.5rem;
}

.section-heading {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: 2rem;
}

/* --- SECTION BACKGROUNDS --- */
.bg-warm { background: var(--warm-white); border-top: 1px solid var(--rule); }
.bg-stone { background: var(--stone-light); border-top: 1px solid var(--rule); }

/* --- FOOTER --- */
footer {
  background: var(--ink);
  border-top: 1px solid rgba(232, 226, 217, 0.08);
  padding: 2rem;
  text-align: center;
}

footer p {
  font-size: 0.75rem;
  color: rgba(232, 226, 217, 0.35);
  letter-spacing: 0.05em;
}

/* --- ANIMATIONS --- */
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible { opacity: 1; transform: translateY(0); }

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  nav { padding: 1rem 1.5rem; }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(250, 248, 245, 0.97);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 1.5rem 2rem 2rem;
    gap: 1.25rem;
    border-bottom: 1px solid var(--rule);
  }

  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }

  section { padding: 4.5rem 1.5rem; }
}

/* Mobile landscape — reduce nav height */
@media (max-height: 500px) and (orientation: landscape) {
  nav {
    padding: 0.5rem 1.5rem;
  }

  nav .nav-name {
    font-size: 0.75rem;
  }

  .nav-links {
    padding: 1rem 1.5rem 1.25rem;
    gap: 0.75rem;
  }
}