:root {
  --sidebar-width: 240px;
  --sidebar-collapsed-width: 60px;
  --sidebar-transition: width 0.25s ease, transform 0.25s ease;
}

/* ── Base sidebar ────────────────────────────────────── */
.app-sidebar {
  position: relative;          /* so collapse btn can be positioned */
  width: var(--sidebar-width);
  min-height: 100%;
  flex-shrink: 0;
  overflow: hidden;
  transition: var(--sidebar-transition);
  background: var(--sidebar-bg);
  /* color: #ffffff; */
}

/* ── Collapsed state (desktop) ───────────────────────── */
.app-sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

#sidebarCollapseIcon {
  transition: transform 0.25s ease;
}

.app-sidebar.collapsed #sidebarCollapseIcon {
  transform: rotate(180deg);
}


/* Hide text labels when collapsed */
.app-sidebar.collapsed .nav-label,
.app-sidebar.collapsed .sidebar-section-label {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

.app-sidebar:not(.collapsed) .nav-label,
.app-sidebar:not(.collapsed) .sidebar-section-label {
  opacity: 1;
  width: auto;
  transition: opacity 0.2s ease 0.05s;
}

/* Center icons when collapsed */
.app-sidebar.collapsed .sidebar-link {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
}

/* Tooltip on hover when collapsed */
.app-sidebar.collapsed .sidebar-link {
  position: relative;
}

.app-sidebar.collapsed .sidebar-link:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(var(--sidebar-collapsed-width) + 8px);
  top: 50%;
  transform: translateY(-50%);
  background: #333;
  color: #fff;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.8rem;
  white-space: nowrap;
  pointer-events: none;
  z-index: 200;
}

/* ── Collapse toggle button ──────────────────────────── */
.sidebar-collapse-btn {
  position: absolute;
  top: 6px;
  right: -10px;                /* straddles the sidebar edge */
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid #ddd;
  background: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0,0,0,.15);
  /* transition: background 0.15s; */
  background: #f0f0f0;
  transition: all 0.25s ease;
}

.app-sidebar.collapsed .sidebar-collapse-btn {
  right: auto;
  left: 32px;
}

/* .sidebar-collapse-btn:hover {
  background: #f0f0f0;
} */

.sidebar-collapse-btn i {
  font-size: 0.65rem;
  color: #555;
  transition: transform 0.25s ease;
}


.app-sidebar:hover {
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.app-sidebar::-webkit-scrollbar { width: 4px; }
.app-sidebar::-webkit-scrollbar-thumb { background: transparent; border-radius: 4px; }
.app-sidebar:hover::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); }

/* ---------- Sidebar Nav ---------- */
.sidebar-nav {
  list-style: none;
  margin: 8px 0;
  padding: 0;
  flex: 1;
}

.sidebar-section-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: rgba(148, 163, 184, 0.4);
  padding: 0 0 0 20px;
  white-space: nowrap;
  overflow: hidden;
  opacity: 0;
  max-height: 0;
  transition:
    opacity var(--sidebar-transition),
    max-height var(--sidebar-transition),
    padding var(--sidebar-transition);
}

.app-sidebar:hover .sidebar-section-label {
  opacity: 1;
  max-height: 40px;
  padding: 18px 0 6px 20px;
}

.sidebar-nav li a,
.sidebar-nav li button.sidebar-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 0 11px 20px;
  /* color: var(--sidebar-text); */
  color: white;
  text-decoration: none;
  border: none;
  background: none;
  width: 100%;
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 500;
  white-space: nowrap;
  transition: background var(--sidebar-transition), color var(--sidebar-transition);
  position: relative;
}

.sidebar-nav li a:hover,
.sidebar-nav li button.sidebar-link:hover {
  background: var(--sidebar-bg-hover);
  color: var(--sidebar-text-active);
}

.sidebar-nav li a.active,
.sidebar-nav li button.sidebar-link.active {
  background: var(--sidebar-accent-muted);
  color: var(--sidebar-accent);
}

.sidebar-nav li a.active::before,
.sidebar-nav li button.sidebar-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 3px;
  background: var(--sidebar-accent);
  border-radius: 0 3px 3px 0;
}

.sidebar-nav li a .nav-icon,
.sidebar-nav li button.sidebar-link .nav-icon {
  font-size: 17px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-nav li a .nav-label,
.sidebar-nav li button.sidebar-link .nav-label {
  opacity: 1;
  max-width: 160px;
}

.sidebar-section-label {
  opacity: 1;
  max-height: 40px;
  padding: 18px 0 6px 20px;
}

.app-sidebar:hover .sidebar-nav li a .nav-label,
.app-sidebar:hover .sidebar-nav li button.sidebar-link .nav-label {
  opacity: 1;
  max-width: 160px;
}

.sidebar-divider {
  border: none;
  border-top: 1px solid var(--sidebar-border);
  margin: 6px 16px;
}

.sidebar-footer {
  padding: 8px 0 12px;
  border-top: 1px solid var(--sidebar-border);
}



/* ---------- Sidebar Overlay (mobile) ---------- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 15, 30, 0.5);
  z-index: 850;
  opacity: 0;
  pointer-events: none;
  transition: opacity 240ms;
}

.sidebar-overlay.visible {
  opacity: 1;
  display: block;
  pointer-events: auto;
}

@media (max-width: 576px) {

.app-sidebar {
        width: var(--sidebar-expanded-width);
        transform: translateX(-100%);
        transition: transform var(--sidebar-transition);
    }

    .app-sidebar .sidebar-nav li a .nav-label,
    .app-sidebar .sidebar-nav li button.sidebar-link .nav-label {
        opacity: 1;
        max-width: 160px;
    }

    .app-sidebar .sidebar-section-label {
        opacity: 1;
        max-height: 40px;
        padding: 18px 0 6px 20px;
    }

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

    /* .sidebar-overlay {
        display: block;
    } */

    .sidebar-overlay {
    display: none;
    pointer-events: none; /* 🔥 important */
    }

    .sidebar-overlay.visible {
        display: block;
        pointer-events: auto;
    }

    .content-wrapper {
        margin-left: 0;
        padding: 0;
        width: 100%;
        padding: 5px 5px 5px 5px;
    }
  }

  /* ── Mobile: hide collapse button, use overlay drawer ── */
@media (max-width: 768px) {
  .sidebar-collapse-btn {
    display: none;
  }

 .app-sidebar {
    z-index: 900;   /* was 300 */
  }

  .app-sidebar {
    position: fixed;   /* KEY FIX */
    top: var(--navbar-height);
    left: 0;
    bottom: 0;

    width: var(--sidebar-width);
    transform: translateX(-100%);
  }

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

  .content-wrapper {
    margin-left: 0 !important;
    width: 100%;
  }


  .sidebar-overlay {
    z-index: 850;      /* keep as-is, now correctly below the sidebar */
  }
  .app-sidebar.mobile-open {
    transform: translateX(0);
  }

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