/**
 * L'Accordage — Sidebar Layout & Navigation
 * Fixed left sidebar with logo, nav links, and mobile overlay behaviour.
 *
 * Depends on: tokens.css, global.css
 *
 * Structure:
 *  .sidebar                — fixed left panel
 *  .sidebar__logo          — logo link at top
 *  .sidebar__nav           — <nav> element
 *  .sidebar__nav-list      — <ul> of nav items
 *  .sidebar__nav-item      — <li> for each link (+ .is-active modifier)
 *  .sidebar__nav-item a    — individual nav link
 *  .sidebar__footer        — bottom info area
 *
 * Mobile:
 *  .sidebar                — slides off-screen by default
 *  .sidebar.is-open        — slides in from left
 *  .sidebar-overlay        — dark backdrop
 *  .header-mobile          — top bar with hamburger
 *  .sidebar-toggle         — hamburger button (3 bars → X)
 *
 * @package laccordage
 */

/* ── Sidebar Container ───────────────────────────────────────────────────── */

.sidebar {
  background: var(--color-sidebar-bg);  /* Light sage-beige — same as page canvas */
  color: var(--color-sidebar-text);
  width: var(--sidebar-width);
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 200;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--color-border-strong);

  /* Subtle warm scrollbar */
  scrollbar-width: thin;
  scrollbar-color: rgba(93, 87, 60, 0.15) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 3px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background: rgba(93, 87, 60, 0.15);
  border-radius: var(--radius-full);
}

/* ── Sidebar Logo Area ───────────────────────────────────────────────────── */

.sidebar__logo {
  display: flex;
  justify-content: center;
  padding: var(--space-6) var(--space-5) var(--space-8);
  flex-shrink: 0;
  text-decoration: none;
  color: var(--color-earth-700);  /* Logo brown — dark on light sidebar */
  transition: opacity var(--duration-fast) var(--ease-out);
}

.sidebar__logo:hover {
  opacity: 0.8;
}

.sidebar__logo-img,
.sidebar__logo img,
.sidebar__logo svg {
  display: block;
  max-width: 190px;
  width: 100%;
  height: auto;
  margin: 0 auto;
  color: var(--color-earth-700);
}

.sidebar__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-earth-700);
  line-height: var(--leading-snug);
}

/* ── Divider ─────────────────────────────────────────────────────────────── */

.sidebar__divider {
  height: 1px;
  background: var(--color-border-strong);
  margin: 0 var(--space-5) var(--space-4);
}

/* ── Sidebar Navigation ──────────────────────────────────────────────────── */

.sidebar__nav {
  flex: 1;
  padding-bottom: var(--space-6);
}

.sidebar__nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar__nav-item {
  margin: 0;
}

.sidebar__nav-item a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  color: var(--color-sidebar-text);
  text-decoration: none;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  border-left: 2px solid transparent;
  transition:
    background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    padding-left var(--duration-fast) var(--ease-out);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  margin-right: var(--space-3);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  position: relative;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__nav-item a:hover {
  background: var(--color-sidebar-hover-bg);
  color: var(--color-earth-900);
  border-left-color: var(--color-sage-400);
  padding-left: calc(var(--space-5) + 2px);
}

.sidebar__nav-item.is-active a,
.sidebar__nav-item a[aria-current="page"] {
  background: rgba(93, 87, 60, 0.10);
  color: var(--color-earth-900);
  border-left-color: var(--color-sage-400);
  font-weight: var(--weight-semibold);
}

.sidebar__nav-item a:focus-visible {
  outline: 2px solid var(--color-sage-400);
  outline-offset: -2px;
}

/* Icon */
.sidebar__nav-icon {
  flex-shrink: 0;
  width: 1.4em;
  text-align: center;
  font-size: 1em;
  opacity: 0.75;
  transition: opacity var(--duration-fast);
}

.sidebar__nav-item a:hover .sidebar__nav-icon,
.sidebar__nav-item.is-active a .sidebar__nav-icon {
  opacity: 1;
}

/* ── Sidebar Footer ──────────────────────────────────────────────────────── */

.sidebar__footer {
  flex-shrink: 0;
  padding: var(--space-5) var(--space-6) var(--space-6);
  border-top: 1px solid var(--color-border-strong);
  margin-top: var(--space-4);
}

.sidebar__footer p {
  font-size: var(--text-xs);
  color: var(--color-warm-600);
  margin: 0 0 var(--space-2);
  line-height: var(--leading-relaxed);
}

.sidebar__footer p:last-child {
  margin-bottom: 0;
}

.sidebar__footer a {
  color: var(--color-warm-600);
  text-decoration: underline;
  text-underline-offset: 0.15em;
  transition: color var(--duration-fast) var(--ease-out);
}

.sidebar__footer a:hover {
  color: var(--color-earth-900);
}

/* ── Mobile Header ───────────────────────────────────────────────────────── */

.header-mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 199;
  background: var(--color-sage-100);  /* Same sage-beige as sidebar */
  height: 58px;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  border-bottom: 1px solid var(--color-border-strong);
}

.header-mobile__logo {
  display: block;
  text-decoration: none;
  color: var(--color-earth-700);
}

.header-mobile__logo img,
.header-mobile__logo svg {
  height: 38px;
  width: auto;
  color: var(--color-earth-700);
}

.header-mobile__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  color: var(--color-earth-900);
  letter-spacing: 0.01em;
}

/* ── Hamburger Button ────────────────────────────────────────────────────── */

.sidebar-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background var(--duration-fast) var(--ease-out);
  -webkit-tap-highlight-color: transparent;
  flex-shrink: 0;
}

.sidebar-toggle:hover {
  background: rgba(93, 87, 60, 0.08);
}

.sidebar-toggle:focus-visible {
  outline: 2px solid var(--color-sage-400);
  outline-offset: 2px;
}

.sidebar-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-earth-900);
  border-radius: var(--radius-full);
  transform-origin: center;
  transition:
    transform var(--duration-normal) var(--ease-inout),
    opacity var(--duration-normal) var(--ease-inout),
    width var(--duration-normal) var(--ease-inout);
}

/* Hamburger bars → X when open */
.sidebar-toggle[aria-expanded="true"] .sidebar-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.sidebar-toggle[aria-expanded="true"] .sidebar-toggle__bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.sidebar-toggle[aria-expanded="true"] .sidebar-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Sidebar Overlay (mobile backdrop) ───────────────────────────────────── */

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(44, 40, 25, 0.5);
  z-index: 198;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  cursor: pointer;
}

.sidebar-overlay.is-visible {
  display: block;
  animation: overlay-in var(--duration-normal) var(--ease-out);
}

@keyframes overlay-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ── Responsive Breakpoints ──────────────────────────────────────────────── */

@media (max-width: 1024px) {
  .header-mobile {
    display: flex;
  }

  /* Offset page content for mobile header */
  .wp-site-blocks,
  #page,
  .site {
    padding-top: 58px;
  }

  /* Sidebar slides off left by default */
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--duration-normal) var(--ease-inout);
    box-shadow: var(--shadow-xl);
  }

  .sidebar.is-open {
    transform: translateX(0);
  }

  body.sidebar-is-open {
    overflow: hidden;
  }
}

@media (min-width: 1025px) {
  /* Desktop: sidebar always visible */
  .sidebar {
    transform: none !important;
  }

  .header-mobile {
    display: none !important;
  }

  .sidebar-toggle {
    display: none;
  }

  .sidebar-overlay {
    display: none !important;
  }
}