/**
 * Modern Admin Interface - High Contrast Design
 * Professional, clean, and easy to use
 */

/* =========================================
   CSS VARIABLES - Modern Color Palette
   ========================================= */
:root {
  /* Primary Colors */
  --primary-blue: #2563eb;
  --primary-blue-hover: #1d4ed8;
  --primary-blue-light: #dbeafe;

  /* Success & Status */
  --success-green: #059669;
  --success-green-hover: #047857;
  --success-light: #d1fae5;

  /* Danger & Error */
  --danger-red: #dc2626;
  --danger-red-hover: #b91c1c;
  --danger-light: #fee2e2;

  /* Warning */
  --warning-orange: #ea580c;
  --warning-light: #fed7aa;

  /* Training Badge */
  --training-blue: #0891b2;
  --training-light: #cffafe;

  /* Neutral Grays */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Border Radius */
  --radius-sm: 6px;
  --radius: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;

  /* Transitions */
  --transition: all 0.2s ease;
}

/* =========================================
   BASE STYLES
   ========================================= */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.6;
  font-size: 14px;
}

/* =========================================
   TOP NAVBAR
   ========================================= */
.top-navbar {
  background: white;
  border-bottom: 2px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-container {
  max-width: 1800px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  padding: 0 24px;
  height: 60px;
}

.navbar-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  text-decoration: none;
  margin-right: 48px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar-brand:hover {
  color: var(--primary-blue);
}

.navbar-links {
  display: flex;
  gap: 8px;
  flex: 1;
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-700);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
}

.nav-link:hover {
  background: var(--gray-100);
  color: var(--gray-900);
}

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

.navbar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

/* =========================================
   SIDEBAR LAYOUT
   ========================================= */
.app-layout {
  display: flex;
  min-height: calc(100vh - 60px);
}

.sidebar {
  width: 280px;
  background: white;
  border-right: 2px solid var(--gray-200);
  padding: 24px 0;
  overflow-y: auto;
}

.sidebar-section {
  margin-bottom: 32px;
}

.sidebar-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  padding: 0 24px;
  margin-bottom: 12px;
}

.sidebar-menu {
  list-style: none;
}

.sidebar-item {
  display: block;
  padding: 10px 24px;
  color: var(--gray-700);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border-left: 3px solid transparent;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-item:hover {
  background: var(--gray-50);
  color: var(--gray-900);
}

.sidebar-item.active {
  background: var(--primary-blue-light);
  color: var(--primary-blue);
  border-left-color: var(--primary-blue);
  font-weight: 600;
}

.main-content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

/* =========================================
   CONTAINER & LAYOUT
   ========================================= */
.admin-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

.admin-container > h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.admin-container > p {
  margin-bottom: 24px;
}

.admin-container > p a {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.admin-container > p a:hover {
  color: var(--primary-blue-hover);
}

/* =========================================
   TABS
   ========================================= */
.tabs {
  display: flex;
  gap: 8px;
  border-bottom: 2px solid var(--gray-200);
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.tab-btn {
  background: transparent;
  border: none;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-600);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tab-btn:hover {
  color: var(--gray-900);
  background: var(--gray-50);
}

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

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =========================================
   SECTION CONTAINERS
   ========================================= */
.section {
  background: white;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.section h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.section h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.section h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 12px;
}

.section p {
  color: var(--gray-600);
  margin-bottom: 12px;
}

/* =========================================
   BUTTONS
   ========================================= */
.btn {
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-size: 14px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  line-height: 1.4;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--primary-blue);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-blue-hover);
}

.btn-success {
  background: var(--success-green);
  color: white;
}

.btn-success:hover {
  background: var(--success-green-hover);
}

.btn-danger {
  background: var(--danger-red);
  color: white;
}

.btn-danger:hover {
  background: var(--danger-red-hover);
}

.btn-secondary {
  background: var(--gray-200);
  color: var(--gray-700);
}

.btn-secondary:hover {
  background: var(--gray-300);
}

/* Button groups */
.button-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

/* =========================================
   FORMS
   ========================================= */
.inline-form {
  background: var(--gray-50);
  border: 2px solid var(--primary-blue-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 20px 0;
  animation: slideDown 0.3s ease;
}

.inline-form.collapsed {
  display: none;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
  font-size: 14px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
  background: white;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px var(--primary-blue-light);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-input::placeholder {
  color: var(--gray-400);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
}

/* =========================================
   EVENTS TABLE
   ========================================= */
.events-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.events-table thead {
  background: var(--gray-50);
  border-bottom: 2px solid var(--gray-200);
}

.events-table th {
  text-align: left;
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.events-table td {
  padding: 6px 12px;
  font-size: 13px;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-100);
  vertical-align: middle;
}

.events-table tbody tr:hover {
  background: var(--gray-50);
}

.events-table tr.event-row-active {
  background: var(--success-light);
}

.events-table tr.event-row-active:hover {
  background: #dcfce7;
}

.event-name-cell {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.event-name-cell strong {
  color: var(--gray-900);
}

.event-organizer {
  font-size: 12px;
  color: var(--gray-400);
}

.event-date-cell {
  white-space: nowrap;
}

/* Compact event detail header bar */
.event-detail-bar {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  padding: 0;
}

.event-detail-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
}

.event-detail-meta {
  font-size: 13px;
  color: var(--gray-500);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.event-status-text {
  color: var(--gray-400);
  font-size: 13px;
}

.event-actions-cell {
  display: flex;
  gap: 6px;
  white-space: nowrap;
}

.btn-sm {
  padding: 2px 8px;
  font-size: 11px;
  border-radius: var(--radius-md);
  line-height: 1.4;
}

.btn-icon {
  padding: 2px 5px;
  font-size: 13px;
  line-height: 1;
  border: 1px solid var(--gray-300);
  background: white;
  cursor: pointer;
  border-radius: 4px;
}

.btn-icon:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
}

/* Manual-merge modal */
.merge-modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
.merge-modal {
  background: #fff;
  border-radius: 8px;
  padding: 18px 20px;
  width: min(540px, 92vw);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.merge-result-row {
  padding: 8px 10px;
  border-radius: 4px;
  cursor: pointer;
}
.merge-result-row:hover {
  background: var(--gray-100, #f3f4f6);
}
.merge-result-row + .merge-result-row {
  border-top: 1px solid var(--gray-100, #f3f4f6);
}

/* Members table — relations toggle column */
.members-table .btn-toggle-relations {
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  color: var(--gray-500);
  padding: 0 4px;
  width: 22px;
}
.members-table .btn-toggle-relations:hover {
  color: var(--gray-700);
}
.members-table .member-relations-row > td {
  background: var(--gray-50);
  padding: 10px 14px;
  border-top: 0;
}
.members-table .member-relations-cell ul {
  list-style: disc;
  padding: 0;
  margin: 0 0 0 18px;
}

/* Overview expandable rows */
.ov-summary-row:hover {
  background: var(--gray-50) !important;
}

.ov-summary-row td:first-child {
  padding-left: 16px;
}

.ov-detail-row {
  display: none;
}

.ov-detail-row.show {
  display: table-row;
}

.ov-detail-row > td {
  padding: 0 !important;
  border-bottom: 2px solid var(--gray-200);
}

.ov-detail-panel {
  padding: 10px 16px 12px 32px;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
}

.ov-detail-panel .detail-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ov-detail-panel table {
  margin: 0;
  box-shadow: none;
  background: white;
  border: 1px solid var(--gray-200);
  overflow: visible;
}

.ov-detail-panel table tr {
  display: table-row !important;
}

.ov-detail-panel table th {
  font-size: 10px;
  padding: 4px 10px;
  display: table-cell;
}

.ov-detail-panel table td {
  font-size: 12px;
  padding: 3px 10px;
  display: table-cell;
}

/* Icon buttons in table rows */
.event-actions-cell {
  white-space: nowrap;
  text-align: right;
}

.event-actions-cell .btn-icon {
  vertical-align: middle;
}

/* Keep old .event-card styles for backwards compat */
.event-card {
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  transition: var(--transition);
  cursor: pointer;
}

.event-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue);
  transform: translateY(-2px);
}

.event-card.active {
  border-color: var(--success-green);
  border-width: 3px;
  padding: 23px;
  background: var(--success-light);
}

.event-card.training {
  border-left: 4px solid var(--training-blue);
}

.event-card.race {
  border-left: 4px solid var(--danger-red);
}

.event-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.event-card p {
  color: var(--gray-600);
  font-size: 14px;
  margin-bottom: 8px;
}

.event-card div {
  margin-top: 16px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* =========================================
   BADGES
   ========================================= */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-training {
  background: var(--training-light);
  color: var(--training-blue);
  border: 1px solid var(--training-blue);
}

.badge-race {
  background: var(--danger-light);
  color: var(--danger-red);
  border: 1px solid var(--danger-red);
}

.badge-active {
  background: var(--success-light);
  color: var(--success-green);
  border: 1px solid var(--success-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* =========================================
   TABLES
   ========================================= */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

thead {
  background: var(--gray-50);
}

thead th {
  color: var(--gray-700);
  font-weight: 600;
  text-align: left;
  padding: 6px 12px;
  border-bottom: 2px solid var(--gray-200);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

tbody td {
  padding: 6px 12px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
  font-size: 13px;
}

tbody tr:hover {
  background: var(--gray-50);
}

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

/* =========================================
   EVENT DETAILS
   ========================================= */
#event-header {
  background: none;
  border-radius: 0;
  padding: 4px 0;
  margin-bottom: 0;
  box-shadow: none;
  border-left: none;
}

.editing-row {
  background: #fffbeb !important;
}

.editing-row .form-input,
.editing-row .form-select {
  padding: 3px 6px;
  font-size: 13px;
}

/* Sortable column headers */
th[onclick] {
  cursor: pointer;
  user-select: none;
}

th[onclick]:hover {
  background: var(--gray-100);
}

th.sort-asc::after {
  content: ' ▲';
  font-size: 10px;
}

th.sort-desc::after {
  content: ' ▼';
  font-size: 10px;
}

/* Allow autocomplete dropdowns to overflow the table */
#finish-table {
  overflow: visible;
}

.event-tab-content {
  display: none;
}

/* =========================================
   NOTIFICATIONS
   ========================================= */
.notification {
  position: fixed;
  top: 24px;
  right: 24px;
  background: white;
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border-left: 4px solid var(--primary-blue);
  z-index: 1000;
  min-width: 300px;
  animation: slideInRight 0.3s ease;
  font-weight: 600;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.notification.success {
  border-left-color: var(--success-green);
  color: var(--success-green);
}

.notification.error {
  border-left-color: var(--danger-red);
  color: var(--danger-red);
}

.notification.info {
  border-left-color: var(--primary-blue);
  color: var(--primary-blue);
}

/* =========================================
   CONFIRMATION DIALOG
   ========================================= */
.confirm-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.confirm-overlay.show {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.confirm-dialog {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 500px;
  width: 90%;
  box-shadow: var(--shadow-xl);
  animation: scaleIn 0.3s ease;
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.confirm-dialog h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.confirm-dialog p {
  color: var(--gray-600);
  margin-bottom: 24px;
  line-height: 1.6;
}

.confirm-buttons {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

/* =========================================
   SETTINGS SECTIONS
   ========================================= */
.settings-section {
  background: var(--gray-50);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.settings-section h4 {
  color: var(--gray-900);
  font-weight: 600;
  margin-bottom: 8px;
}

.settings-section p {
  color: var(--gray-600);
  font-size: 13px;
  margin-bottom: 12px;
}

/* =========================================
   FILE UPLOAD
   ========================================= */
.file-upload-area {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  background: var(--gray-50);
  transition: var(--transition);
  cursor: pointer;
}

.file-upload-area:hover {
  border-color: var(--primary-blue);
  background: var(--primary-blue-light);
}

.file-upload-area input[type="file"] {
  display: none;
}

.file-upload-label {
  cursor: pointer;
  color: var(--gray-700);
  font-weight: 600;
}

/* =========================================
   UTILITY CLASSES
   ========================================= */
.text-center {
  text-align: center;
}

.mt-4 {
  margin-top: 24px;
}

.mb-4 {
  margin-bottom: 24px;
}

.gap-3 {
  gap: 16px;
}

/* =========================================
   EVENT SIDEBAR ITEMS (split layout)
   ========================================= */
.event-sidebar-item {
  padding: 7px 10px;
  border-radius: 5px;
  cursor: pointer;
  margin-bottom: 2px;
  border: 1px solid transparent;
  transition: var(--transition);
}

.event-sidebar-item:hover {
  background: white;
  border-color: #e2e8f0;
}

.event-sidebar-item.selected {
  background: white;
  border-color: var(--primary-blue);
  box-shadow: 0 1px 3px rgba(37, 99, 235, 0.15);
}

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 768px) {
  .admin-container {
    padding: 16px;
  }

  .admin-container > h1 {
    font-size: 24px;
  }

  .section {
    padding: 20px;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .notification {
    right: 16px;
    left: 16px;
    min-width: auto;
  }
}