/* ═══════════════════════════════════════════════════════════════════════════
   layout.css — Page shell, sidebar, navigation, main content area
   Zach Miller Studio — v2.0
═══════════════════════════════════════════════════════════════════════════ */

/* ── Page shell ── */
.page {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
  padding: 3.5rem 2rem 3.5rem 3rem;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  overflow-x: hidden;
}

/* Site identity */
.site-name {
  display: block;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 1.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: 0.1rem;
  text-decoration: none;
  transition: opacity var(--t-fast);
}
.site-name:hover { opacity: 0.7; }

.site-tagline {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-top: 0.3rem;
  margin-bottom: 3rem;
}

/* ── Navigation ── */
nav {
  display: flex;
  flex-direction: column;
}
.nav-item {
  display: block;
  padding: 0.4rem 0;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mid);
  text-decoration: none;
  transition: color var(--t-fast);
  cursor: pointer;
}
.nav-item:hover { color: var(--accent); }
.nav-item.active { color: var(--accent); font-weight: 700; }

/* Nav submenu */
.nav-submenu {
  display: flex;
  flex-direction: column;
  margin: 0.15rem 0 0.6rem 0;
  overflow: hidden;
}
.nav-subitem {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding: 0.18rem 0 0.18rem 1rem;
  text-decoration: none;
  transition: color var(--t-fast);
}
.nav-subitem:hover { color: var(--accent); }
.nav-subitem.active {
  color: var(--accent);
  font-weight: 600;
}

/* Sidebar footer */
.sidebar-footer {
  margin-top: auto;
  padding-top: 2rem;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  line-height: 1.8;
}
.sidebar-footer a {
  color: var(--ink-dim);
  transition: color var(--t-fast);
}
.sidebar-insta {
  color: var(--ink-mid);
}
.sidebar-insta:hover {
  color: var(--accent);
}
.sidebar-footer a:hover { color: var(--ink-mid); }

/* ── Main content ── */
.main {
  padding: var(--content-pad-top) var(--content-pad-right) var(--content-pad-bottom) var(--content-pad-left);
  min-width: 0;
}

/* ── Section primitives ── */
.section-divider {
  border: none;
  border-top: 2px solid var(--ink);
  margin: 3rem 0 2.5rem;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
}

/* ── Responsive ── */
@media (max-width: 960px) {
  :root {
    --sidebar-w: 220px;
    --content-pad-right: 3rem;
    --content-pad-left: 2rem;
  }
}

@media (max-width: 768px) {
  .page {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .sidebar {
    position: relative;
    height: auto;
    padding: 1.5rem 1.5rem 1.25rem;
    border-bottom: 1px solid var(--rule);
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 2rem;
  }

  .site-tagline { margin-bottom: 0; }

  nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0 0.25rem;
  }
  .nav-item { padding: 0.25rem 0.5rem; font-size: 0.85rem; }
  .nav-submenu { display: none; }
  .sidebar-footer { display: none; }

  .main {
    padding: 1.75rem 1.5rem 4rem;
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .sidebar { padding: 1.25rem 1rem 1rem; }
  .main { padding: 1.5rem 1rem 3rem; }
}