/* ==========================================================
   ADMIN PANEL - DARK THEME WITH PRIMARY BLUE ACCENT
   Font: Hind Siliguri
   ========================================================== */
@import url('https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --bg-main: #090d16;
  --bg-card: #121a2e;
  --bg-card-hover: #17223b;
  --bg-input: #17233d;
  --bg-sidebar: #0e1626;
  --border-color: #1e2d4a;
  --border-focus: #3b82f6;

  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: rgba(37, 99, 235, 0.15);
  --primary-glow: rgba(59, 130, 246, 0.35);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.15);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.15);

  --sidebar-w: 260px;
  --header-h: 65px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Hind Siliguri', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ================= LAYOUT ================= */
.app-wrapper {
  display: flex;
  min-height: 100vh;
  position: relative;
}

.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-brand {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  border-bottom: 1px solid var(--border-color);
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}

.sidebar-brand i {
  color: var(--primary);
  font-size: 22px;
}

.sidebar-nav {
  padding: 16px 12px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-section-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  padding: 12px 12px 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-item i {
  font-size: 17px;
  width: 22px;
  text-align: center;
  color: var(--text-muted);
  transition: color 0.2s;
}

.nav-item:hover {
  background: var(--bg-card-hover);
  color: #fff;
}

.nav-item:hover i {
  color: var(--primary);
}

.nav-item.active {
  background: var(--primary-light);
  color: #60a5fa;
  font-weight: 600;
  border-left: 3px solid var(--primary);
}

.nav-item.active i {
  color: #60a5fa;
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
}

/* ================= HEADER ================= */
.topbar {
  height: var(--header-h);
  background: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 90;
}

.menu-toggle-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 16px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.user-badge .avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-light);
  color: #60a5fa;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.content-body {
  padding: 24px;
  flex: 1;
}

/* ================= CARDS & STATS ================= */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 12px;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-title i {
  color: var(--primary);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: transform 0.2s, border-color 0.2s;
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-light);
  color: #60a5fa;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.stat-info h3 {
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  line-height: 1.1;
}

.stat-info p {
  font-size: 13.5px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ================= BUTTONS ================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 0 14px var(--primary-glow);
}

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

.btn-secondary:hover {
  background: var(--border-color);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover {
  background: #dc2626;
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 6px;
}

.btn-icon {
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: var(--radius-sm);
}

/* ================= FORMS & INPUTS ================= */
.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 7px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14.5px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--primary-light);
}

textarea.form-control {
  min-height: 90px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

/* ================= FILTER BAR ================= */
.filter-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 20px;
}

.filter-form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.filter-form .form-control {
  width: auto;
  min-width: 180px;
  flex: 1;
}

/* ================= TABLES ================= */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.table th {
  background: var(--bg-sidebar);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  vertical-align: middle;
}

.table tbody tr:hover {
  background: var(--bg-card-hover);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 9px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success {
  background: var(--success-bg);
  color: #34d399;
}

.badge-warning {
  background: var(--warning-bg);
  color: #fbbf24;
}

.badge-danger {
  background: var(--danger-bg);
  color: #f87171;
}

.badge-primary {
  background: var(--primary-light);
  color: #60a5fa;
}

/* Alert Flash */
.alert {
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.alert-success {
  background: var(--success-bg);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.alert-danger {
  background: var(--danger-bg);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.alert-warning {
  background: var(--warning-bg);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 18px;
}

.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
}

.page-link:hover,
.page-link.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ================= LOGIN PAGE ================= */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: radial-gradient(circle at top, #172554 0%, #090d16 65%);
}

.login-box {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 36px 30px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}

.login-logo {
  text-align: center;
  margin-bottom: 24px;
}

.login-logo i {
  font-size: 44px;
  color: var(--primary);
}

.login-logo h2 {
  font-size: 22px;
  font-weight: 700;
  margin-top: 10px;
  color: #fff;
}

.login-logo p {
  color: var(--text-secondary);
  font-size: 13.5px;
}

/* ================= RESPONSIVE ================= */
@media (max-width: 991px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.show {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .menu-toggle-btn {
    display: inline-flex;
  }

  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 95;
  }

  .sidebar-backdrop.show {
    display: block;
  }
}

/* ================= ADMIN MODAL DIALOG ================= */
.admin-modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 13, 0.78);
  backdrop-filter: blur(5px);
  z-index: 1050;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.admin-modal-backdrop.open {
  display: flex;
}

.admin-modal-dialog {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.admin-modal-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.02);
}

.admin-modal-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
}

.admin-modal-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
  width: 34px;
  height: 34px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.admin-modal-close:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.admin-modal-body {
  padding: 22px;
  overflow-y: auto;
  font-size: 14px;
  flex: 1;
}

.admin-modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  background: rgba(255, 255, 255, 0.02);
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 18px;
}

@media (max-width: 600px) {
  .detail-grid {
    grid-template-columns: 1fr;
  }
}

.detail-item {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 11px 14px;
  border-radius: var(--radius-sm);
}

.detail-item.full-width {
  grid-column: 1 / -1;
}

.detail-label {
  font-size: 11.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.detail-value {
  font-size: 14px;
  color: #fff;
  font-weight: 500;
  word-break: break-word;
}