/* ═══════════════════════════════════════════════════════════
   SIDE NAVIGATION + TOP BAR + AUTH UI
   ═══════════════════════════════════════════════════════════ */

:root {
  --sidenav-width: 220px;
  --sidenav-collapsed-width: 56px;
  --topbar-height: 48px;
}

/* ── Layout shell ── */
body {
  display: flex;
  min-height: 100vh;
}

.sidenav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidenav-width);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width 0.2s ease;
  overflow: hidden;
}

.sidenav.collapsed {
  width: var(--sidenav-collapsed-width);
}

.main-wrapper {
  flex: 1;
  margin-left: var(--sidenav-width);
  transition: margin-left 0.2s ease;
  min-width: 0;
}

.sidenav.collapsed ~ .main-wrapper {
  margin-left: var(--sidenav-collapsed-width);
}

/* ── Sidenav header ── */
.sidenav-header {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sidenav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  overflow: hidden;
}

.sidenav-logo {
  flex-shrink: 0;
  color: var(--accent-blue);
  width: 24px;
  height: 24px;
}

.sidenav-title {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-bright);
  opacity: 1;
  transition: opacity 0.15s ease;
}

.sidenav.collapsed .sidenav-title {
  opacity: 0;
  pointer-events: none;
}

/* ── Sidenav navigation ── */
.sidenav-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.sidenav-section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 12px 8px 4px;
  white-space: nowrap;
  overflow: hidden;
}

.sidenav.collapsed .sidenav-section-label {
  opacity: 0;
  height: 0;
  padding: 0;
  overflow: hidden;
}

.sidenav-divider {
  height: 1px;
  background: var(--border);
  margin: 8px;
}

.sidenav.collapsed .sidenav-divider {
  margin: 4px;
}

.sidenav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  background: none;
  border-radius: 6px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
  overflow: hidden;
  position: relative;
}

.sidenav-item svg {
  flex-shrink: 0;
  opacity: 0.6;
}

.sidenav-item:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.sidenav-item:hover svg {
  opacity: 0.8;
}

.sidenav-item.active {
  background: var(--glow-blue);
  color: var(--accent-blue);
}

.sidenav-item.active svg {
  opacity: 1;
  color: var(--accent-blue);
}

.sidenav-label {
  opacity: 1;
  transition: opacity 0.15s ease;
}

.sidenav.collapsed .sidenav-label {
  opacity: 0;
  pointer-events: none;
}

/* Tooltip for collapsed state */
.sidenav.collapsed .sidenav-item {
  justify-content: center;
  padding: 8px;
}

.sidenav.collapsed .sidenav-item::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(var(--sidenav-collapsed-width) + 4px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 11px;
  color: var(--text);
  white-space: nowrap;
  z-index: 200;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  box-shadow: 0 4px 12px var(--shadow-color);
}

.sidenav.collapsed .sidenav-item:hover::after {
  opacity: 1;
}

/* Private items — hidden when not authenticated */
body:not(.authenticated) .sidenav-private,
body:not(.authenticated) .sidenav-private-label,
body:not(.authenticated) .sidenav-divider {
  display: none;
}

/* ── Sidenav footer ── */
.sidenav-footer {
  padding: 8px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.sidenav-collapse-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  background: none;
  border-radius: 6px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
  overflow: hidden;
}

.sidenav-collapse-btn:hover {
  background: var(--surface-hover);
  color: var(--text);
}

.sidenav-collapse-btn svg {
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.sidenav.collapsed .sidenav-collapse-btn {
  justify-content: center;
  padding: 8px;
}

.sidenav.collapsed .sidenav-collapse-btn svg {
  transform: rotate(180deg);
}

/* ── Top bar ── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 12px;
  height: var(--topbar-height);
  padding: 0 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.topbar-hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
}

.topbar-hamburger:hover {
  color: var(--text);
  background: var(--surface-hover);
}

.topbar-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.topbar-label {
  color: var(--text-dim);
}

.topbar-separator {
  color: var(--border-accent);
}

.topbar-app {
  color: var(--text-bright);
  font-weight: 500;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* ── User menu ── */
.user-menu {
  position: relative;
}

.user-menu-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s;
}

.user-menu-btn:hover {
  border-color: var(--border-accent);
  color: var(--text);
}

/* Authenticated state: show avatar initials */
body.authenticated .user-icon-anon {
  display: none;
}

body:not(.authenticated) .user-avatar {
  display: none;
}

.user-avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  font-family: var(--font-body);
}

.user-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px;
  min-width: 200px;
  z-index: 200;
  box-shadow: 0 12px 40px var(--shadow-heavy);
}

.user-dropdown.visible {
  display: block;
}

.user-dropdown-info {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}

.user-dropdown-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-bright);
}

.user-dropdown-email {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
}

.user-dropdown-item {
  display: block;
  width: 100%;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text);
  text-decoration: none;
  border: none;
  background: none;
  border-radius: 4px;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s;
}

.user-dropdown-item:hover {
  background: var(--surface-hover);
  color: var(--text-bright);
}

/* ── Sidenav overlay (mobile) ── */
.sidenav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidenav {
    transform: translateX(-100%);
    width: var(--sidenav-width);
  }

  .sidenav.mobile-open {
    transform: translateX(0);
  }

  .sidenav.mobile-open ~ .sidenav-overlay,
  .sidenav.mobile-open + .main-wrapper + .sidenav-overlay {
    display: block;
  }

  .main-wrapper {
    margin-left: 0;
  }

  .sidenav.collapsed ~ .main-wrapper {
    margin-left: 0;
  }

  .topbar-hamburger {
    display: flex;
  }
}