/* ══════════════════════════════════════════════════════
   nav.css — Topbar horizontale + drawer mobile + footer
   ══════════════════════════════════════════════════════ */

/* ── Variables topbar ───────────────────────────────── */
:root {
  --topbar-h: 58px;
  --topbar-bg-light: #ffffff;
  --topbar-bg-dark:  #1a1a22;
  --topbar-bg: var(--topbar-bg-light);
  --dropdown-bg-light: #ffffff;
  --dropdown-bg-dark:  #22222e;
  --dropdown-bg: var(--dropdown-bg-light);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --topbar-bg: var(--topbar-bg-dark);
    --dropdown-bg: var(--dropdown-bg-dark);
  }
}
html[data-theme="dark"] { --topbar-bg: var(--topbar-bg-dark); --dropdown-bg: var(--dropdown-bg-dark); }
html[data-theme="light"] { --topbar-bg: var(--topbar-bg-light); --dropdown-bg: var(--dropdown-bg-light); }

/* ── Reset layout ───────────────────────────────────── */
body { padding-top: var(--topbar-h); }

/* ── Topbar ─────────────────────────────────────────── */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--line);
  z-index: 500;
  transition: background .25s, border-color .25s;
  box-shadow: 0 1px 12px rgba(0,0,0,.06);
}

.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 20px;
}

/* ── Logo ───────────────────────────────────────────── */
.topbar-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  flex-shrink: 0;
  margin-right: 28px;
}
.topbar-logo-icon { font-size: 20px; line-height: 1; }
.topbar-logo-text {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.35;
  letter-spacing: .02em;
  white-space: nowrap;
}
.topbar-logo-text strong {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: .05em;
  text-transform: uppercase;
}

/* ── Nav horizontale ────────────────────────────────── */
.topbar-nav {
  display: flex;
  align-items: stretch;
  height: 100%;
  flex: 1;
  gap: 2px;
}

/* ── Groupe nav ─────────────────────────────────────── */
.topnav-group {
  position: relative;
  display: flex;
  align-items: stretch;
}

.topnav-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 14px;
  height: 100%;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
  transition: color .15s, border-color .15s;
}
.topnav-btn:hover { color: var(--accent); }
.topnav-group.is-active .topnav-btn {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}
.topnav-chevron {
  font-size: 10px;
  opacity: .5;
  transition: transform .2s;
}
.topnav-group.dropdown-open .topnav-chevron { transform: rotate(180deg); }

/* ── Dropdown ───────────────────────────────────────── */
.topnav-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 1px);
  left: 0;
  min-width: 210px;
  background: var(--dropdown-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  padding: 6px;
  z-index: 600;
  animation: dropIn .15s ease;
}
@keyframes dropIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.topnav-group.dropdown-open .topnav-dropdown { display: block; }

.topnav-item {
  display: block;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 12.5px;
  color: var(--muted);
  text-decoration: none;
  transition: background .1s, color .1s;
  white-space: nowrap;
}
.topnav-item:hover { background: var(--highlight); color: var(--ink); }
.topnav-item.is-active {
  color: var(--accent);
  font-weight: 600;
  background: var(--highlight);
  border-left: 2px solid var(--accent);
  padding-left: 10px;
}

/* ── Actions droite ─────────────────────────────────── */
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  flex-shrink: 0;
}

/* ── Theme toggle (intégré dans topbar) ─────────────── */
.theme-toggle {
  position: static;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 5px 12px;
  cursor: pointer;
  font-family: 'DM Sans', sans-serif;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  box-shadow: none;
  transition: background .25s, color .2s, border-color .25s;
  user-select: none;
  white-space: nowrap;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }
.theme-toggle .icon-sun,
.theme-toggle .icon-moon { font-size: 13px; line-height: 1; transition: opacity .2s; }
.theme-toggle .icon-sun  { opacity: 1; }
.theme-toggle .icon-moon { opacity: 0; position: absolute; pointer-events: none; }
html[data-theme="dark"] .theme-toggle .icon-sun  { opacity: 0; position: absolute; pointer-events: none; }
html[data-theme="dark"] .theme-toggle .icon-moon { opacity: 1; position: static; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun  { opacity: 0; position: absolute; pointer-events: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { opacity: 1; position: static; }
}

/* ── Burger ─────────────────────────────────────────── */
.nav-burger {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  padding: 0;
}
.nav-burger span {
  display: block;
  width: 16px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: background .2s;
}

/* ── Overlay ────────────────────────────────────────── */
.nav-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 700;
  backdrop-filter: blur(2px);
}
.nav-overlay.is-open { display: block; }

/* ── Drawer mobile ──────────────────────────────────── */
.nav-drawer {
  position: fixed;
  top: 0; right: 0;
  width: min(320px, 90vw);
  height: 100vh;
  background: var(--topbar-bg);
  border-left: 1px solid var(--line);
  z-index: 800;
  transform: translateX(100%);
  transition: transform .28s cubic-bezier(.4,0,.2,1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.nav-drawer.is-open { transform: translateX(0); }

.nav-drawer-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}
.nav-drawer-header .topbar-logo-icon { font-size: 20px; }
.nav-drawer-header .topbar-logo-text { flex: 1; }
.nav-drawer-close {
  background: none; border: none;
  font-size: 16px; color: var(--muted);
  cursor: pointer; padding: 4px 6px;
  border-radius: 4px;
  transition: color .15s;
}
.nav-drawer-close:hover { color: var(--ink); }

.nav-drawer-body { padding: 12px 10px 24px; flex: 1; }

.drawer-group { margin-bottom: 4px; }
.drawer-group-btn {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px;
  background: none; border: none;
  border-radius: 6px;
  font-family: 'DM Sans', sans-serif;
  font-size: 13px; font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  transition: background .12s;
}
.drawer-group-btn:hover { background: var(--highlight); }
.drawer-group.is-open .drawer-group-btn { color: var(--accent); background: var(--highlight); }
.drawer-chevron { font-size: 16px; color: var(--muted); transition: transform .2s; }
.drawer-group.is-open .drawer-chevron { transform: rotate(90deg); }

.drawer-sub { display: none; padding: 2px 0 6px 24px; }
.drawer-group.is-open .drawer-sub { display: flex; flex-direction: column; gap: 2px; }

.drawer-link {
  display: block; padding: 7px 10px;
  border-radius: 4px; font-size: 12px;
  color: var(--muted); text-decoration: none;
  border-left: 2px solid transparent;
  transition: background .1s, color .1s;
}
.drawer-link:hover { background: var(--highlight); color: var(--ink); }
.drawer-link.is-active { color: var(--accent); font-weight: 600; border-left-color: var(--accent); background: var(--highlight); }

/* ══════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════ */
.site-footer {
  background: var(--topbar-bg);
  border-top: 1px solid var(--line);
  margin-top: 60px;
  transition: background .25s, border-color .25s;
}
.site-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 36px 24px 28px;
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 32px;
  align-items: start;
}
.footer-brand { }
.footer-brand-logo {
  display: flex; align-items: center; gap: 9px;
  text-decoration: none; margin-bottom: 10px;
}
.footer-brand-logo .topbar-logo-icon { font-size: 18px; }
.footer-decree {
  font-size: 11px; color: var(--muted); line-height: 1.6;
}
.footer-decree strong { color: var(--ink); font-size: 11px; }

.footer-col h4 {
  font-size: 10px; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 10px;
}
.footer-col a {
  display: block;
  font-size: 12px; color: var(--muted);
  text-decoration: none;
  padding: 3px 0;
  transition: color .15s;
}
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 14px 24px;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-bottom-left { font-size: 11px; color: var(--muted); }
.footer-bottom-right { display: flex; gap: 16px; }
.footer-bottom-right a { font-size: 11px; color: var(--muted); text-decoration: none; transition: color .15s; }
.footer-bottom-right a:hover { color: var(--accent); }

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 900px) {
  .topbar-nav { display: none; }
  .nav-burger  { display: flex; }
  .theme-toggle .label { display: none; }
  .site-footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .site-footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; }
}