/* Sidebar navigation */

body {
  background-color: var(--color-sidebar-bg);
}

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background-color: var(--color-sidebar-bg);
  display: flex;
  flex-direction: column;
  z-index: 200;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-6) 0 var(--space-4);
}

.sidebar__brand {
  padding: 0 var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-sidebar-border);
  margin-bottom: var(--space-3);
}

.sidebar__brand a {
  text-decoration: none;
}

.sidebar__brand-name {
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  color: #f0e4cc;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.sidebar__brand-mark {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-sidebar-muted);
  margin-top: var(--space-1);
}

.sidebar__nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 var(--space-3);
}

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-sidebar-link);
  text-decoration: none;
  transition: background-color var(--transition), color var(--transition);
  line-height: 1;
  white-space: nowrap;
}

.sidebar__link:hover {
  background-color: var(--color-sidebar-hover-bg);
  color: var(--color-sidebar-link-hover);
}

.sidebar__link--active {
  background-color: var(--color-sidebar-active-bg);
  color: var(--color-sidebar-active);
}

.sidebar__link-icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  opacity: 0.75;
}

.sidebar__link--active .sidebar__link-icon,
.sidebar__link:hover .sidebar__link-icon {
  opacity: 1;
}

.sidebar__footer {
  padding: var(--space-4) var(--space-3) 0;
  margin-top: var(--space-3);
  border-top: 1px solid var(--color-sidebar-border);
}

.sidebar__footer form {
  width: 100%;
}

.sidebar__signout {
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-sidebar-muted);
  background: none;
  border: none;
  width: 100%;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background-color var(--transition), color var(--transition);
  text-align: left;
}

.sidebar__signout:hover {
  background-color: rgba(220, 70, 70, 0.1);
  color: #fca5a5;
}

/* App shell — light content panel floating on dark sidebar base */
.app-shell {
  margin-left: var(--sidebar-width);
  background-color: var(--color-bg);
  min-height: 100vh;
}

/* Mobile overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.55);
  z-index: 199;
}

.sidebar-overlay--visible {
  display: block;
}

/* Mobile toggle button — hidden on desktop */
.sidebar-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  border-radius: var(--radius);
  transition: background-color var(--transition);
  flex-shrink: 0;
}

.sidebar-toggle:hover {
  background-color: var(--color-border);
}

/* Mobile top bar inside shell */
.app-topbar {
  display: none;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-topbar__title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
}

/* Mobile breakpoint */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
  }

  .sidebar--open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  .sidebar-toggle {
    display: flex;
  }

  .app-topbar {
    display: flex;
  }

  .app-shell {
    margin-left: 0;
  }
}