/* ============================================================
   DESIGN SYSTEM — PROJET_ECOLE
   Palette: Blanc + Bleu (blue-600) + Noir
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Variables ─────────────────────────────────── */
:root {
  /* Colors */
  --color-primary:     #2563EB;   /* blue-600 */
  --color-primary-hover: #1D4ED8; /* blue-700 */
  --color-primary-light: #DBEAFE; /* blue-100 */
  --color-primary-fg:  #FFFFFF;

  --color-bg:          #F8FAFC;   /* slate-50 */
  --color-surface:     #FFFFFF;
  --color-border:      #E2E8F0;   /* slate-200 */
  --color-border-hover:#CBD5E1;   /* slate-300 */

  --color-text:        #0F172A;   /* slate-900 */
  --color-text-muted:  #64748B;   /* slate-500 */
  --color-text-subtle: #94A3B8;   /* slate-400 */

  --color-success:     #16A34A;
  --color-success-bg:  #DCFCE7;
  --color-danger:      #DC2626;
  --color-danger-bg:   #FEE2E2;
  --color-warning:     #D97706;
  --color-warning-bg:  #FEF3C7;
  --color-info:        #0284C7;
  --color-info-bg:     #E0F2FE;

  /* Sidebar */
  --sidebar-width: 224px; /* w-56 */
  --sidebar-bg:    #FFFFFF;

  /* Header */
  --header-height: 60px;

  /* Shadows */
  --shadow-sm:   0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow:      0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md:   0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);

  /* Radii */
  --radius-sm:   4px;
  --radius:      6px;
  --radius-md:   8px;
  --radius-lg:   12px;

  /* Typography */
  --font:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --text-xs:     12px;
  --text-sm:     13px;
  --text-base:   14px;
  --text-md:     16px;
  --text-lg:     18px;
  --text-xl:     20px;
  --text-2xl:    24px;
}

/* ── Base Reset ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  font-family: var(--font);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ── App Layout ─────────────────────────────────────── */
.ds-layout {
  display: flex;
  min-height: 100vh;
  background: var(--color-bg);
}

.ds-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  margin-left: var(--sidebar-width);
}

.ds-main {
  flex: 1;
  padding: 24px;
  margin-top: var(--header-height);
  overflow-y: auto;
}

/* ── Sidebar ────────────────────────────────────────── */
.ds-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: 40;
  overflow-y: auto;
}

.ds-sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 16px;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
}

.ds-sidebar-brand-icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: white;
}

.ds-sidebar-brand-name {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.ds-nav {
  flex: 1;
  padding: 8px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ds-nav-section {
  padding: 16px 8px 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}

.ds-nav-section:first-child {
  padding-top: 8px;
}

.ds-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: background 0.15s, color 0.15s;
  text-decoration: none;
  cursor: pointer;
}

.ds-nav-link:focus-visible,
.ds-logout-btn:focus-visible,
.ds-header-btn:focus-visible,
.ds-user-trigger:focus-visible,
.ds-sidebar-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.ds-nav-link:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.ds-nav-link.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
}

.ds-nav-link svg,
.ds-nav-link i {
  width: 16px;
  height: 16px;
  min-width: 16px;
  min-height: 16px;
  flex: 0 0 16px;
  display: block;
  flex-shrink: 0;
  color: currentColor;
  fill: none;
  stroke: currentColor;
  opacity: 1;
  pointer-events: none;
}

.ds-nav-link.active svg,
.ds-nav-link.active i {
  opacity: 1;
}

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

.ds-sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius);
}

.ds-user-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius);
}

.ds-sidebar-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.ds-user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.ds-sidebar-user-info {
  flex: 1;
  min-width: 0;
}

.ds-user-info {
  flex: 1;
  min-width: 0;
}

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

.ds-sidebar-user-role {
  font-size: 11px;
  color: var(--color-text-subtle);
  text-transform: capitalize;
}

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

.ds-user-role {
  font-size: 11px;
  color: var(--color-text-subtle);
  text-transform: capitalize;
}

.ds-logout-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: background 0.15s, color 0.15s;
  border: none;
  background: transparent;
  cursor: pointer;
}

.ds-logout-btn:hover {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.ds-logout-btn svg,
.ds-logout-btn i {
  width: 15px;
  height: 15px;
  display: block;
  flex-shrink: 0;
  color: currentColor;
  fill: none;
  stroke: currentColor;
  pointer-events: none;
}

.ds-header-btn svg,
.ds-header-btn i,
.ds-user-trigger svg,
.ds-user-trigger i {
  display: block;
  flex-shrink: 0;
  color: currentColor;
  fill: none;
  stroke: currentColor;
  pointer-events: none;
}

.ds-header-btn svg,
.ds-header-btn i {
  width: 18px;
  height: 18px;
}

.ds-user-trigger svg,
.ds-user-trigger i {
  width: 14px;
  height: 14px;
}

.ds-dropdown-item svg,
.ds-dropdown-item i {
  width: 15px;
  height: 15px;
  display: block;
  flex-shrink: 0;
  color: currentColor;
  fill: none;
  stroke: currentColor;
  pointer-events: none;
}

.ds-sidebar-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

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

.ds-sidebar-toggle svg,
.ds-sidebar-toggle i {
  width: 18px;
  height: 18px;
  display: block;
  flex-shrink: 0;
  color: currentColor;
  fill: none;
  stroke: currentColor;
  pointer-events: none;
}

/* ── Header / Topbar ────────────────────────────────── */
.ds-header {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 30;
  box-shadow: var(--shadow-sm);
}

.ds-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.ds-breadcrumb-sep { color: var(--color-text-subtle); }
.ds-breadcrumb-current { color: var(--color-text); font-weight: 500; }

.ds-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ds-header-left,
.ds-header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.ds-header-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.ds-user-menu {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ds-user-greeting {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.ds-header-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.ds-header-username {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ds-header-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.15s;
}

.ds-header-btn:hover {
  background: var(--color-bg);
  border-color: var(--color-border);
  color: var(--color-text);
}

.ds-notif-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  background: var(--color-danger);
  border-radius: 50%;
  border: 2px solid white;
}

.ds-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 6px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  min-width: 200px;
  display: none;
  z-index: 100;
}

.ds-dropdown.open { display: block; }

.ds-dropdown-header {
  padding: 12px 14px 10px;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.ds-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  font-size: var(--text-sm);
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.1s;
  text-decoration: none;
}

.ds-dropdown-item:hover { background: var(--color-bg); }
.ds-dropdown-item.danger { color: var(--color-danger); }
.ds-dropdown-item.danger:hover { background: var(--color-danger-bg); }

.ds-dropdown-divider {
  height: 1px;
  background: var(--color-border);
  margin: 4px 0;
}

.ds-user-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px 4px 4px;
  border-radius: var(--radius);
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  transition: all 0.15s;
}

.ds-user-trigger:hover {
  background: var(--color-bg);
  border-color: var(--color-border);
}

.ds-user-trigger-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ds-user-trigger-name {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ds-notif-dropdown {
  width: 320px;
}

.ds-notif-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.1s;
}

.ds-notif-item:last-child { border-bottom: none; }
.ds-notif-item:hover { background: var(--color-bg); }

.ds-notif-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 12px;
}

.ds-notif-text { flex: 1; }
.ds-notif-desc { font-size: 13px; line-height: 1.4; }
.ds-notif-time { font-size: 11px; color: var(--color-text-subtle); margin-top: 2px; }

/* ── Page Header ────────────────────────────────────── */
.ds-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.ds-page-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.ds-page-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: 2px;
}

.ds-page-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* ── Stat Cards ─────────────────────────────────────── */
.ds-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.ds-stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: box-shadow 0.15s;
}

.ds-stat-card:hover { box-shadow: var(--shadow); }

.ds-stat-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.ds-stat-icon.blue   { background: var(--color-primary-light); color: var(--color-primary); }
.ds-stat-icon.green  { background: var(--color-success-bg); color: var(--color-success); }
.ds-stat-icon.amber  { background: var(--color-warning-bg); color: var(--color-warning); }
.ds-stat-icon.red    { background: var(--color-danger-bg); color: var(--color-danger); }
.ds-stat-icon.slate  { background: #F1F5F9; color: var(--color-text-muted); }

.ds-stat-value {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.ds-stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
  margin-top: 2px;
}

/* ── Cards ──────────────────────────────────────────── */
.ds-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.ds-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
}

.ds-card-title {
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ds-card-body { padding: 16px; }

/* ── Tables ─────────────────────────────────────────── */
.ds-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.ds-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.ds-table thead tr {
  background: #F8FAFC;
  border-bottom: 1px solid var(--color-border);
}

.ds-table th {
  padding: 10px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.ds-table td {
  padding: 11px 14px;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

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

.ds-table tbody tr:hover td { background: #F8FAFC; }

/* ── Buttons ─────────────────────────────────────────── */
.ds-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
  text-decoration: none;
  white-space: nowrap;
}

.ds-btn svg, .ds-btn i { width: 15px; height: 15px; }

.ds-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.ds-btn-primary {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.ds-btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); color: white; }

.ds-btn-secondary {
  background: white;
  color: var(--color-text);
  border-color: var(--color-border);
}
.ds-btn-secondary:hover { background: var(--color-bg); border-color: var(--color-border-hover); }

.ds-btn-danger {
  background: var(--color-danger);
  color: white;
  border-color: var(--color-danger);
}
.ds-btn-danger:hover { background: #B91C1C; }

.ds-btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: transparent;
}
.ds-btn-ghost:hover { background: var(--color-bg); color: var(--color-text); }

.ds-btn-sm {
  padding: 5px 10px;
  font-size: var(--text-xs);
}

.ds-btn-sm svg, .ds-btn-sm i { width: 13px; height: 13px; }

.ds-btn-icon {
  padding: 7px;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: white;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.15s;
}
.ds-btn-icon:hover { background: var(--color-bg); color: var(--color-text); border-color: var(--color-border-hover); }

/* ── Badges ─────────────────────────────────────────── */
.ds-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}

.ds-badge-blue    { background: var(--color-primary-light); color: var(--color-primary); }
.ds-badge-green   { background: var(--color-success-bg); color: var(--color-success); }
.ds-badge-amber   { background: var(--color-warning-bg); color: var(--color-warning); }
.ds-badge-red     { background: var(--color-danger-bg); color: var(--color-danger); }
.ds-badge-slate   { background: #F1F5F9; color: var(--color-text-muted); }

/* ── Forms ──────────────────────────────────────────── */
.ds-form-group { display: flex; flex-direction: column; gap: 5px; }

.ds-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.ds-label-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 400;
}

.ds-input,
.ds-select,
.ds-textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-family: var(--font);
  color: var(--color-text);
  background: white;
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}

.ds-input:focus,
.ds-select:focus,
.ds-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.12);
}

.ds-input::placeholder { color: var(--color-text-subtle); }

.ds-textarea { resize: vertical; min-height: 80px; }

.ds-input-icon-wrap {
  position: relative;
}

.ds-input-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-subtle);
  width: 15px;
  height: 15px;
  pointer-events: none;
}

.ds-input-icon-wrap .ds-input { padding-left: 34px; }

/* ── Form Grid ──────────────────────────────────────── */
.ds-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.ds-form-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.ds-form-grid.full { grid-column: 1 / -1; }

/* ── Alerts ─────────────────────────────────────────── */
.ds-alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid;
  font-size: var(--text-sm);
  margin-bottom: 16px;
}

.ds-alert-success { background: var(--color-success-bg); border-color: #86EFAC; color: #166534; }
.ds-alert-error   { background: var(--color-danger-bg);  border-color: #FCA5A5; color: #991B1B; }
.ds-alert-warning { background: var(--color-warning-bg); border-color: #FCD34D; color: #92400E; }
.ds-alert-info    { background: var(--color-info-bg);    border-color: #7DD3FC; color: #075985; }

/* ── Modal ──────────────────────────────────────────── */
.ds-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgb(0 0 0 / 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.ds-modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.ds-modal {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  max-width: 520px;
  width: 90%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  transform: translateY(8px);
  transition: transform 0.2s;
}

.ds-modal-overlay.open .ds-modal { transform: translateY(0); }

.ds-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.ds-modal-title {
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-text);
}

.ds-modal-body { padding: 20px; overflow-y: auto; }
.ds-modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 14px 20px;
  border-top: 1px solid var(--color-border);
}

/* ── Empty State ────────────────────────────────────── */
.ds-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  text-align: center;
  color: var(--color-text-muted);
  gap: 10px;
}

.ds-empty-icon {
  width: 48px;
  height: 48px;
  color: var(--color-text-subtle);
}

.ds-empty-title { font-size: var(--text-md); font-weight: 600; color: var(--color-text); }
.ds-empty-desc  { font-size: var(--text-sm); }

/* ── Tabs ───────────────────────────────────────────── */
.ds-tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  gap: 0;
  overflow-x: auto;
}

.ds-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  border: none;
  background: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.15s;
  white-space: nowrap;
}

.ds-tab:hover { color: var(--color-text); }

.ds-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ── Notification Toast ─────────────────────────────── */
#ds-toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ds-toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: white;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  font-size: var(--text-sm);
  font-weight: 500;
  min-width: 260px;
  max-width: 380px;
  animation: toastIn 0.3s ease;
}

.ds-toast.success { border-left: 4px solid var(--color-success); }
.ds-toast.error   { border-left: 4px solid var(--color-danger); }
.ds-toast.warning { border-left: 4px solid var(--color-warning); }
.ds-toast.info    { border-left: 4px solid var(--color-primary); }

.ds-toast-icon { flex-shrink: 0; }
.ds-toast-icon.success { color: var(--color-success); }
.ds-toast-icon.error   { color: var(--color-danger); }
.ds-toast-icon.warning { color: var(--color-warning); }
.ds-toast-icon.info    { color: var(--color-primary); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Utilities ──────────────────────────────────────── */
.ds-gap-sm { gap: 8px; }
.ds-flex   { display: flex; align-items: center; }
.ds-flex-between { display: flex; align-items: center; justify-content: space-between; }
.ds-text-muted    { color: var(--color-text-muted); }
.ds-text-sm       { font-size: var(--text-sm); }
.ds-mt-sm { margin-top: 8px; }
.ds-mt-md { margin-top: 16px; }
.ds-mb-md { margin-bottom: 16px; }
.ds-p-0   { padding: 0 !important; }

/* ── Scrollbar ──────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-border-hover); }

/* ── Chart Container ────────────────────────────────── */
.ds-chart-wrap {
  position: relative;
  padding: 16px;
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 768px) {
  .ds-content { margin-left: 0; }
  .ds-sidebar { transform: translateX(-100%); transition: transform 0.25s; }
  .ds-sidebar.open { transform: translateX(0); }
  .ds-header { left: 0; }
  .ds-sidebar-toggle { display: inline-flex; }
  .ds-form-grid { grid-template-columns: 1fr; }
  .ds-stats-grid { grid-template-columns: 1fr 1fr; }
  .ds-page-header { flex-direction: column; align-items: flex-start; }
}

/* ── Legacy Compatibility Layer ────────────────────── */
.ds-main .card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.ds-main .card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-border);
}

.ds-main .card-body { padding: 16px; }

.ds-main .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
}

.ds-main .btn-sm {
  padding: 5px 10px;
  font-size: var(--text-xs);
}

.ds-main .btn-primary {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.ds-main .btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.ds-main .btn-secondary,
.ds-main .btn-outline-primary {
  background: white;
  color: var(--color-text);
  border-color: var(--color-border);
}

.ds-main .btn-secondary:hover,
.ds-main .btn-outline-primary:hover {
  background: var(--color-bg);
}

.ds-main .btn-success {
  background: var(--color-success);
  color: white;
  border-color: var(--color-success);
}

.ds-main .btn-danger {
  background: var(--color-danger);
  color: white;
  border-color: var(--color-danger);
}

.ds-main .btn-warning {
  background: var(--color-warning);
  color: white;
  border-color: var(--color-warning);
}

.ds-main .form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-family: var(--font);
  color: var(--color-text);
  background: white;
  outline: none;
}

.ds-main .form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.12);
}

.ds-main .table,
.ds-main .table-hover {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.ds-main .table thead tr,
.ds-main .table-hover thead tr {
  background: #F8FAFC;
  border-bottom: 1px solid var(--color-border);
}

.ds-main .table th,
.ds-main .table-hover th {
  padding: 10px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.ds-main .table td,
.ds-main .table-hover td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.ds-main .table-hover tbody tr:hover td {
  background: #F8FAFC;
}

.ds-main .badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}

.ds-main .badge-success { background: var(--color-success-bg); color: var(--color-success); }
.ds-main .badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.ds-main .badge-danger  { background: var(--color-danger-bg); color: var(--color-danger); }
.ds-main .badge-primary { background: var(--color-primary-light); color: var(--color-primary); }
.ds-main .badge-secondary { background: #F1F5F9; color: var(--color-text-muted); }

.ds-main .table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}