/* ===== PANEL LAYOUT (SIDEBAR) ===== */
.panel {
  display: grid;
  grid-template-columns: 220px 1fr;
  height: 100vh;
  overflow: hidden;
  transition: grid-template-columns var(--transition-base);
}

.panel.sidebar-collapsed {
  grid-template-columns: 60px 1fr;
}

/* --- Sidebar --- */
.sidebar {
  background-color: white;
  border-right: 1px solid var(--color-gray-200);
  color: var(--color-gray-700);
  display: flex;
  flex-direction: column;
  padding: var(--space-4) 0;
  overflow-y: auto;
  overflow-x: hidden;
  transition: width var(--transition-base);
}

.sidebar__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-3) 0 var(--space-5);
  margin-bottom: var(--space-5);
}

.sidebar__toggle {
  background: none;
  border: none;
  color: var(--color-gray-400);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.sidebar__toggle:hover {
  color: var(--color-gray-700);
  background-color: var(--color-gray-100);
}

/* --- Collapsed state --- */
.panel.sidebar-collapsed .sidebar__brand-text,
.panel.sidebar-collapsed .sidebar__link span,
.panel.sidebar-collapsed .sidebar__section-label,
.panel.sidebar-collapsed .sidebar__user-info,
.panel.sidebar-collapsed #btn-logout {
  display: none;
}

.panel.sidebar-collapsed .sidebar__top {
  flex-direction: column;
  align-items: center;
  padding: 0 var(--space-2);
  gap: var(--space-2);
}

.panel.sidebar-collapsed .sidebar__brand {
  justify-content: center;
  padding: 0;
  margin-bottom: 0;
}

.panel.sidebar-collapsed .sidebar__brand-icon {
  font-size: 1.3rem;
}

.panel.sidebar-collapsed .sidebar__toggle {
  width: 100%;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.3rem;
}

.panel.sidebar-collapsed .sidebar__link {
  justify-content: center;
  padding: var(--space-2);
}

.panel.sidebar-collapsed .sidebar__link i {
  font-size: 1.15rem;
}

.panel.sidebar-collapsed .sidebar__footer {
  justify-content: center;
  padding: var(--space-3) var(--space-2);
}

.panel.sidebar-collapsed .sidebar__user {
  justify-content: center;
}

.sidebar__brand {
  padding: 0 var(--space-5);
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.sidebar__brand-icon {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
}

.sidebar__brand h1 {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.sidebar__brand h1 span {
  color: var(--color-secondary);
  font-weight: 400;
}

.sidebar__section-label {
  padding: var(--space-2) var(--space-5);
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-gray-400);
  margin-top: var(--space-3);
}

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

.sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--color-gray-500);
  font-size: var(--font-size-xs);
  font-weight: 500;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.sidebar__link i {
  font-size: 1rem;
  width: 18px;
  text-align: center;
}

.sidebar__link:hover {
  color: var(--color-gray-800);
  background-color: var(--color-gray-100);
}

.sidebar__link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.sidebar__footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-gray-200);
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar__user {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.sidebar__user-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.625rem;
}

.sidebar__user-info {
  display: flex;
  flex-direction: column;
}

.sidebar__user-name {
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-gray-700);
}

.sidebar__user-role {
  font-size: 0.625rem;
  color: var(--color-gray-400);
}

/* --- Panel Content --- */
.panel__content {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--color-gray-50);
}

.panel__topbar {
  padding: var(--space-4) var(--space-8);
  background-color: white;
  border-bottom: 1px solid var(--color-gray-200);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.panel__title {
  font-size: var(--font-size-base);
  font-weight: 600;
}

.panel__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-8);
}

/* --- Section: Overview --- */
.overview__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.overview__stat {
  background-color: white;
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  border: 1px solid var(--color-gray-200);
}

.overview__stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-primary);
}

.overview__stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  margin-top: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 500;
}

.overview__recent {
  background-color: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200);
  padding: var(--space-6);
}

.overview__recent h3 {
  margin-bottom: var(--space-4);
  font-size: var(--font-size-base);
}

/* --- Section: Table --- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background-color: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
}

.data-table th,
.data-table td {
  padding: var(--space-4) var(--space-5);
  text-align: left;
  font-size: var(--font-size-sm);
}

.data-table th {
  background-color: var(--color-gray-50);
  font-weight: 600;
  color: var(--color-gray-600);
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--color-gray-200);
}

.data-table td {
  border-bottom: 1px solid var(--color-gray-100);
  color: var(--color-gray-700);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background-color: var(--color-gray-50);
}

/* --- Section: Form Page --- */
.form-page {
  max-width: 560px;
}

.form-page__card {
  background-color: white;
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid var(--color-gray-200);
}

/* --- Full-width Form --- */
.form-full {
  background-color: white;
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid var(--color-gray-200);
}

.form-full__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4) var(--space-6);
}

.form-full__span-2 {
  grid-column: span 2;
}

.form-full__actions {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-gray-200);
}

/* --- Actions Row --- */
.actions-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.actions-row__right {
  display: flex;
  gap: var(--space-3);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .panel {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

  .panel__body {
    padding: var(--space-4);
  }

  .panel__topbar {
    padding: var(--space-4) var(--space-5);
  }
}