/* ═══════════════════════════════════════════
   Navigation latérale partagée (rail)
   Injectée via scripts/nav.js
═══════════════════════════════════════════ */

/* Décale le contenu quand le rail est présent */
body.has-rail {
  --rail-current-w: var(--rail-w, 220px);
  padding-left: var(--rail-current-w);
  transition: padding-left .18s ease;
}
body.has-rail.rail-collapsed {
  --rail-current-w: var(--rail-collapsed-w, 72px);
}

/* ── Rail ── */
.rail {
  width: var(--rail-current-w, var(--rail-w, 220px));
  background: var(--surf);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; bottom: 0;
  z-index: 100; overflow: hidden;
  transition: width .18s ease;
}

/* Logo */
.rail-logo {
  position: relative;
  padding: 18px 16px 14px;
  display: flex; align-items: center; gap: 10px;
  flex-shrink: 0;
}
.rail-collapse-btn {
  position: absolute;
  right: 8px;
  top: 8px;
  width: 22px;
  height: 22px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surf2);
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .12s, color .12s, transform .12s;
}
.rail-collapse-btn:hover { background: var(--surf3); color: var(--text); }
.rail-logo-img { height: 50px; width: auto; display: block; }
.rail-logo-favicon { width: 34px; height: 34px; border-radius: 8px; display: none; }
:root[data-theme="dark"]       .logo-light { display: none; }
:root:not([data-theme="dark"]) .logo-dark  { display: none; }
.rail-badge {
  font-size: 9px; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase;
  background: var(--warm-bg); color: var(--warm);
  border: 1px solid rgba(245,158,11,.25);
  border-radius: 4px; padding: 1px 5px; margin-left: auto;
}

/* Nav items */
.rail-nav {
  flex: 1; padding: 8px; overflow-y: auto; scrollbar-width: none;
}
.rail-nav::-webkit-scrollbar { display: none; }

.rail-section-label {
  font-size: 9px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted);
  padding: 8px 8px 4px; margin-top: 4px;
}
.rail-item {
  display: flex; align-items: center; gap: 9px;
  padding: 8px 10px; border-radius: var(--radius-sm, 6px);
  font-size: 12.5px; font-weight: 500; color: var(--muted);
  transition: background .12s, color .12s;
  border: none; background: transparent;
  width: 100%; text-align: left; text-decoration: none;
  cursor: pointer; font-family: inherit;
}
.rail-item:hover  { background: var(--surf2); color: var(--text); }
.rail-item.active { background: var(--accent-bg); color: var(--accent2); font-weight: 600; }

.rail-item-ico {
  width: 18px; height: 18px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; opacity: .8;
}
.rail-separator { height: 1px; background: var(--border); margin: 6px 8px; }

/* Footer */
.rail-footer {
  border-top: 1px solid var(--border); padding: 10px 8px;
  display: flex; flex-direction: column; gap: 2px; flex-shrink: 0;
}
.rail-user {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 8px; border-radius: var(--radius-sm, 6px);
  font-size: 12px; font-weight: 500; color: var(--muted);
  overflow: hidden;
}
.rail-user-avatar {
  width: 26px; height: 26px; border-radius: 6px; flex-shrink: 0;
  background: var(--accent-bg); border: 1px solid var(--border2);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent2); font-size: 11px; font-weight: 700;
}
.rail-user-name {
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  flex: 1; min-width: 0;
}

.rail.collapsed .rail-logo {
  padding: 14px 8px 12px;
  justify-content: center;
}
.rail.collapsed .rail-logo-img { display: none; }
.rail.collapsed .rail-logo-favicon { display: block; }
.rail.collapsed .rail-badge,
.rail.collapsed .rail-section-label,
.rail.collapsed .rail-user-name { display: none; }
.rail.collapsed .rail-nav { padding: 8px 6px; }
.rail.collapsed .rail-item {
  justify-content: center;
  padding: 9px 0;
  font-size: 0;
}
.rail.collapsed .rail-item-ico {
  width: 20px;
  height: 20px;
  opacity: 1;
}
.rail.collapsed .rail-user {
  justify-content: center;
  padding: 6px 0;
}
.rail.collapsed .rail-collapse-btn {
  transform: rotate(180deg);
  right: 50%;
  margin-right: -11px;
}

/* ── Page topbar (header partagé par images, diapositive, formations) ── */
.page-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.page-topbar .page-h1 {
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  margin: 0;
  flex: 0 1 auto;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.page-topbar .page-context {
  flex: 1;
  min-width: 0;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.folder-nav-host {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 0;
  flex-shrink: 0;
}
.folder-nav-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surf);
  color: var(--muted);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .12s, border-color .12s, color .12s, opacity .12s;
}
.folder-nav-btn:hover {
  background: var(--surf2);
  color: var(--text);
  border-color: var(--border2);
}
.folder-nav-btn:disabled {
  opacity: .4;
  cursor: default;
  pointer-events: none;
}
.toolbar .folder-nav-host,
.actions .folder-nav-host {
  flex: 0 0 100%;
  margin: -2px 0 2px;
}
.folder-nav-host .folder-nav-context {
  min-width: 0;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.folder-location-box {
  margin: 8px 0 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surf);
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.folder-location-box .folder-location-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text2);
  white-space: nowrap;
  flex-shrink: 0;
}
.folder-location-box .folder-location-value {
  min-width: 0;
  flex: 1;
  font-size: 15px;
  font-weight: 800;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 4px;
}
.breadcrumb-link {
  background: none; border: none; cursor: pointer;
  font-size: inherit; font-weight: inherit;
  color: var(--blue, #3b82f6); padding: 0;
  text-decoration: none; white-space: nowrap;
  transition: opacity .15s;
}
.breadcrumb-link:hover { opacity: .75; text-decoration: underline; }
.breadcrumb-sep {
  color: var(--muted, #888); font-size: 13px; font-weight: 400;
  user-select: none; flex-shrink: 0;
}
.breadcrumb-current {
  color: var(--text); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.folder-location-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.page-topbar .count-card {
  background: var(--surf);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  flex-shrink: 0;
}

/* ── Bottom navigation (mobile) ── */
.bottom-nav {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 210;
  background: var(--surf); border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.bottom-nav-inner { display: flex; align-items: stretch; height: 56px; }
.bnav-item {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px; color: var(--muted); font-size: 10px; font-weight: 600;
  text-decoration: none; border: none; background: transparent;
  font-family: inherit; cursor: pointer; transition: color .15s;
  -webkit-tap-highlight-color: transparent;
}
.bnav-item:active { opacity: .7; }
.bnav-item.active { color: var(--accent2); }
.bnav-item svg { flex-shrink: 0; }
@media (max-width: 900px) { .bottom-nav { display: block; } }

/* ── Burger menu mobile ── */
.topbar-burger-wrap {
  display: none;
  position: relative;
  flex-shrink: 0;
}
.topbar-burger-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surf);
  color: var(--muted);
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
  flex-shrink: 0;
}
.topbar-burger-btn:hover,
.topbar-burger-btn[aria-expanded="true"] {
  background: var(--surf2);
  color: var(--text);
  border-color: var(--border2);
}
.topbar-burger-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  max-height: calc(100dvh - 80px);
  overflow-y: auto;
  background: var(--surf);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 28px rgba(0,0,0,.18);
  padding: 6px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.topbar-burger-menu[aria-hidden="true"] { display: none; }
.burger-menu-link { text-decoration: none; }
.burger-menu-link.active { background: var(--accent-bg); color: var(--accent2); font-weight: 600; }
.burger-menu-section {
  font-size: 9px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted);
  padding: 6px 10px 3px;
}
.burger-menu-user {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
}
.burger-menu-avatar {
  width: 28px; height: 28px; border-radius: 7px; flex-shrink: 0;
  background: var(--accent-bg); border: 1px solid var(--border2);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent2); font-size: 12px; font-weight: 700;
}
.burger-menu-name {
  font-size: 12px; font-weight: 600; color: var(--text2);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.burger-menu-sep {
  height: 1px; background: var(--border); margin: 3px 0;
}
.burger-menu-item {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 10px;
  border: none; background: transparent;
  color: var(--muted);
  font-size: 13px; font-weight: 500; font-family: inherit;
  border-radius: 7px; cursor: pointer;
  width: 100%; text-align: left;
  transition: background .12s, color .12s;
}
.burger-menu-item:hover { background: var(--surf2); color: var(--text); }
.burger-menu-logout:hover { background: rgba(244,71,71,.1); color: var(--red, #ef4444); }

/* Responsive : masqué sur mobile */
@media (max-width: 900px) {
  .rail { display: none; }
  body.has-rail { padding-left: 0; }
  .page-topbar { margin-left: 0; top: 0; }
  .topbar-burger-wrap { display: block; }
}
@media (max-width: 600px) {
  .page-topbar { padding: 0 14px; height: 48px; gap: 8px; }
  .page-topbar .page-h1 { font-size: 13px; }
  .page-topbar .page-context { font-size: 11px; }
  .folder-location-box {
    margin: 6px 0 10px;
    padding: 8px 10px;
    gap: 8px;
    flex-wrap: wrap;
  }
  .folder-location-box .folder-location-label { font-size: 12px; }
  .folder-location-box .folder-location-value { font-size: 13px; }
  .folder-location-actions {
    width: 100%;
    justify-content: stretch;
  }
  .folder-location-actions .btn-create,
  .folder-location-actions .btn-import {
    flex: 1;
    justify-content: center;
  }
}