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

/* ── Page shell ── */
.page {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: var(--pad-top) 1.5rem var(--pad-bottom) 2rem;
  overflow-y: auto;
  overflow-x: hidden;
}

/* Sidebar header (name + hamburger) */
.sidebar-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}

/* Name + Instagram stacked */
.sidebar-identity {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

/* Site identity */
.site-name {
  display: block;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 1.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  line-height: 1.15;
  text-decoration: none;
  transition: opacity var(--t-fast);
  -webkit-text-stroke: 0.5px var(--ink);
}
.site-name:hover { opacity: 0.65; }

/* Instagram icon — below name */
.insta-icon {
  color: var(--ink);
  font-weight: 700;
  transition: color var(--t-fast);
  display: flex;
  align-items: center;
  margin-top: 1rem;
}
.insta-icon:hover { color: var(--accent); }
.insta-icon svg { stroke-width: 2; }

/* Hamburger menu toggle — hidden on desktop */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 24px;
  height: 24px;
  cursor: pointer;
  padding: 0;
  background: none;
  border: none;
}
.menu-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
  transition: transform var(--t-fast), opacity var(--t-fast);
}
/* Animate to X when open */
.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] .menu-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ── Navigation — 50% larger ── */
nav { display: flex; flex-direction: column; }

.nav-item {
  display: block;
  padding: 0.5rem 0;
  font-family: var(--font-sans);
  font-size: 1.17rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mid);
  text-decoration: none;
  transition: color var(--t-fast);
}
.nav-item:hover { color: var(--accent); }
.nav-item.active { color: var(--accent); font-weight: 700; }

.nav-submenu {
  display: flex;
  flex-direction: column;
  margin: 0.1rem 0 0.5rem 0;
}
.nav-subitem {
  font-family: var(--font-sans);
  font-size: 1.08rem;
  font-weight: 500;
  font-style: italic;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-dim);
  padding: 0.2rem 0 0.2rem 0.9rem;
  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-footer a:hover { color: var(--ink-mid); }

/* ── Main content ── */
.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--section-gap);
  padding: var(--pad-top) var(--pad-x) var(--pad-bottom) var(--pad-x);
}

/* ══════════════════════════════════════════════════════════
   Responsive
══════════════════════════════════════════════════════════ */

@media (max-width: 960px) {
  :root {
    --sidebar-w: 240px;
    --pad-x: 16px;
  }
}

@media (max-width: 768px) {
  :root {
    --pad-top: 16px;
    --pad-bottom: 40px;
    --section-gap: 2rem;
  }

  .page {
    flex-direction: column;
  }

  /* Sidebar → horizontal top bar */
  .sidebar {
    width: 100%;
    height: auto;
    position: sticky;
    top: 0;
    z-index: 100;
    flex-direction: column;
    padding: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--rule);
  }

  .sidebar-header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0.85rem 1.25rem;
    margin-bottom: 0;
  }

  /* Mobile: insta left, name center, hamburger right */
  .sidebar-identity {
    display: contents;
  }

  .insta-icon {
    margin-top: 0;
    justify-self: start;
    order: 1;
  }

  .site-name {
    font-size: 1.375rem;
    justify-self: center;
    order: 2;
    text-align: center;
  }

  .menu-toggle {
    justify-self: end;
    order: 3;
  }

  /* Show hamburger, hide desktop nav */
  .menu-toggle { display: flex; }

  .nav-collapse {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 0 1.25rem 1rem;
  }
  .nav-collapse.open { display: flex; }

  .nav-item { padding: 0.45rem 0; font-size: 1rem; }
  .nav-submenu {
    flex-direction: column;
    margin: 0 0 0.25rem 0;
    gap: 0;
  }
  .nav-subitem {
    padding: 0.3rem 0 0.3rem 0.9rem;
    font-size: 0.9rem;
  }
  .sidebar-footer { display: none; }

  .main {
    padding: var(--pad-top) 1rem var(--pad-bottom);
  }
}

@media (max-width: 480px) {
  .sidebar-header { padding: 0.75rem 1rem; }
  .main { padding: 12px 10px var(--pad-bottom); }
}