/* ── App Shell ────────────────────────────────────────────────────────── */

#app {
  display: flex;
  height: 100vh;
  overflow: hidden;
  background: var(--bg-body);
}

/* ── Sidebar ─────────────────────────────────────────────────────────── */
#sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  height: 100vh;
  background: var(--dark);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width var(--transition-slow), min-width var(--transition-slow);
  z-index: 100;
  position: relative;
}

#sidebar.collapsed {
  width: var(--sidebar-collapsed-w);
  min-width: var(--sidebar-collapsed-w);
}

/* Sidebar Logo */
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-5) var(--sp-4);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  text-decoration: none;
  flex-shrink: 0;
}

.sidebar-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: var(--r-sm);
  background: white;
  flex-shrink: 0;
  padding: 2px;
}

.sidebar-logo-text {
  overflow: hidden;
  transition: opacity var(--transition);
}

.sidebar-logo-text strong {
  display: block;
  color: white;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
}

.sidebar-logo-text span {
  display: block;
  color: rgba(255,255,255,0.45);
  font-size: var(--font-size-xs);
  white-space: nowrap;
}

#sidebar.collapsed .sidebar-logo-text { opacity: 0; width: 0; }

/* Sidebar Nav */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--sp-3) var(--sp-2);
}

.sidebar-nav::-webkit-scrollbar { width: 3px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); }

.nav-section {
  margin-bottom: var(--sp-4);
}

.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  padding: 0 var(--sp-3) var(--sp-2) var(--sp-3);
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--transition);
}

#sidebar.collapsed .nav-section-label { opacity: 0; }

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 9px var(--sp-3);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-decoration: none;
  color: rgba(255,255,255,0.62);
  font-size: var(--font-size-base);
  font-weight: 400;
  position: relative;
}

.nav-item:hover {
  background: var(--dark-2);
  color: rgba(255,255,255,0.88);
  text-decoration: none;
}

.nav-item.active {
  background: var(--red-light);
  color: white;
  font-weight: 500;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: var(--red);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.nav-item:hover svg,
.nav-item.active svg { opacity: 1; }

.nav-item-label {
  overflow: hidden;
  transition: opacity var(--transition);
  flex: 1;
}

#sidebar.collapsed .nav-item-label { opacity: 0; width: 0; }

.nav-badge {
  background: var(--red);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: var(--r-full);
  flex-shrink: 0;
  transition: opacity var(--transition);
}

#sidebar.collapsed .nav-badge { opacity: 0; }

/* Sidebar Footer */
.sidebar-footer {
  padding: var(--sp-3) var(--sp-2);
  border-top: 1px solid rgba(255,255,255,0.07);
  flex-shrink: 0;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background var(--transition-fast);
  overflow: hidden;
}

.sidebar-user:hover { background: var(--dark-2); }

.sidebar-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--r-full);
  background: var(--red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  color: white;
  flex-shrink: 0;
  text-transform: uppercase;
}

.sidebar-user-info {
  overflow: hidden;
  flex: 1;
  transition: opacity var(--transition);
}

.sidebar-user-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: rgba(255,255,255,0.88);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  white-space: nowrap;
  text-transform: capitalize;
}

#sidebar.collapsed .sidebar-user-info { opacity: 0; width: 0; }

/* ── Main Area ────────────────────────────────────────────────────────── */
#main {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ── Header ──────────────────────────────────────────────────────────── */
#header {
  height: var(--header-h);
  min-height: var(--header-h);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 var(--sp-6);
  gap: var(--sp-4);
  z-index: 50;
}

.header-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-2);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
  border-radius: var(--r-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.header-toggle:hover { background: var(--bg-hover); color: var(--text-primary); }

.header-breadcrumb {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  min-width: 0;
}

.header-breadcrumb .page-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}

/* ── Page Content ────────────────────────────────────────────────────── */
#page-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-6);
  background: var(--bg-body);
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-6);
  gap: var(--sp-4);
  flex-wrap: wrap;
}

.page-header h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.page-header-right {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

/* ── Loading Screen ────────────────────────────────────────────────────── */
#loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-card);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-4);
  z-index: 9999;
}

.loading-logo {
  width: 56px;
  height: 56px;
  background: var(--red);
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  color: white;
  letter-spacing: -1px;
}

.loading-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--red);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Login Page ────────────────────────────────────────────────────────── */
#login-page {
  min-height: 100vh;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-4);
  position: relative;
  z-index: 1;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border-radius: var(--r-xl);
  padding: var(--sp-10) var(--sp-8);
  box-shadow: 0 24px 64px rgba(0,0,0,0.35), 0 0 0 1px rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  position: relative;
  z-index: 2;
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.96);
}

.login-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-8);
}

.login-logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: var(--r-md);
  flex-shrink: 0;
}

.login-logo-text strong {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.login-logo-text span {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.login-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--sp-1);
}

.login-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--sp-6);
}

.login-error-msg {
  font-size: 13px;
  color: var(--red);
  background: rgba(228, 0, 6, 0.06);
  border: 1px solid rgba(228, 0, 6, 0.18);
  border-radius: var(--r-md);
  padding: var(--sp-2) var(--sp-3);
  margin-bottom: var(--sp-3);
}

/* ── Tablet (769px – 1024px) ─────────────────────────────────────────── */
@media (min-width: 769px) and (max-width: 1024px) {
  #sidebar {
    width: var(--sidebar-collapsed-w);
    min-width: var(--sidebar-collapsed-w);
  }
  #sidebar .sidebar-logo-text,
  #sidebar .nav-item-label,
  #sidebar .nav-section-label,
  #sidebar .nav-badge,
  #sidebar .sidebar-user-info { opacity: 0; width: 0; pointer-events: none; }
  #page-content { padding: var(--sp-5); }
}

/* ── Mobile (≤768px) ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
  #sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
    z-index: 200;
    width: 260px;
    min-width: 260px;
  }

  #sidebar .sidebar-logo-text,
  #sidebar .nav-item-label,
  #sidebar .nav-section-label,
  #sidebar .sidebar-user-info { opacity: 1; width: auto; }

  #sidebar.open { transform: translateX(0); }

  #main-wrapper,
  #main { margin-left: 0 !important; }

  #page-content { padding: var(--sp-3); }

  #header,
  #main-header { padding: 0 var(--sp-4); }

  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 15, 30, 0.5);
    z-index: 199;
    backdrop-filter: blur(2px);
  }
  .sidebar-overlay.visible { display: block; }

  .page-header { margin-bottom: var(--sp-4); }
  .page-header h2 { font-size: var(--font-size-lg); }

  .login-card {
    padding: var(--sp-8) var(--sp-5);
    border-radius: var(--r-lg);
  }

  /* Stack grid cards on mobile */
  .stats-grid { grid-template-columns: repeat(2, 1fr) !important; gap: var(--sp-3) !important; }
  .dashboard-grid { grid-template-columns: 1fr !important; }

  /* Modal full-screen on mobile */
  #modal-overlay .modal-container,
  #modal-overlay [class*="modal"] {
    width: 100% !important;
    max-width: 100% !important;
    max-height: 100dvh !important;
    border-radius: var(--r-lg) var(--r-lg) 0 0 !important;
    margin: auto 0 0 0 !important;
    align-self: flex-end;
  }
  #modal-overlay {
    align-items: flex-end !important;
  }

  /* Tables scroll on mobile */
  .table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* Better touch targets */
  .btn { min-height: 40px; }
  .nav-item { padding: 11px var(--sp-3); }
}

/* ── Website nav group accordion ─────────────────────────────────────────── */
.nav-group.open .nav-group-children { display: block !important; }
.nav-group.open .nav-group-chevron  { transform: rotate(180deg); }