/**
 * CoupleCash Admin Panel Stylesheet
 */

/* ========================================
   Variables
   ======================================== */

:root {
  /* Primary - Indigo */
  --primary: #4F46E5;
  --primary-dark: #4338CA;
  --primary-light: rgba(79, 70, 229, 0.1);

  /* Backgrounds */
  --bg-primary: #FAFAF9;
  --bg-card: #FFFFFF;

  /* Text */
  --text-primary: #1C1917;
  --text-secondary: #78716C;
  --text-muted: #A8A29E;

  /* Borders */
  --border-color: #E7E5E4;

  /* Warm stone scale */
  --gray-50: #FAFAF9;
  --gray-100: #F5F5F4;
  --gray-200: #E7E5E4;
  --gray-300: #D6D3D1;
  --gray-400: #A8A29E;
  --gray-500: #78716C;
  --gray-600: #57534E;
  --gray-700: #44403C;
  --gray-800: #292524;
  --gray-900: #1C1917;

  /* Semantic */
  --success: #10B981;
  --success-light: rgba(16, 185, 129, 0.1);
  --danger: #EF4444;
  --danger-light: rgba(239, 68, 68, 0.1);
  --warning: #F59E0B;
  --warning-light: rgba(245, 158, 11, 0.1);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(28, 25, 23, 0.04);
  --shadow-md: 0 4px 12px rgba(28, 25, 23, 0.06);
  --shadow-lg: 0 8px 24px rgba(28, 25, 23, 0.08);

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  /* Fonts */
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, Consolas, monospace;

  /* Layout */
  --sidebar-width: 240px;
}


/* ========================================
   Base
   ======================================== */

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

html {
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre { font-family: var(--font-mono); }


/* ========================================
   Layout
   ======================================== */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--gray-900);
  color: #FFFFFF;
  display: flex;
  flex-direction: column;
  z-index: 100;
  border-right: 1px solid var(--gray-800);
}

.main-content {
  margin-left: var(--sidebar-width);
  padding: 2rem;
  min-height: 100vh;
}


/* ========================================
   Sidebar
   ======================================== */

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1.25rem 1.25rem 1rem;
  border-bottom: 1px solid var(--gray-800);
}

.sidebar-brand {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sidebar-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--primary);
  color: #FFFFFF;
  padding: 0.125rem 0.5rem;
  border-radius: 9999px;
}

.sidebar-nav {
  flex: 1;
  padding: 0.75rem 0;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 1.25rem;
  color: var(--gray-400);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  border-radius: 0;
}

.nav-item:hover {
  color: #FFFFFF;
  background: var(--gray-800);
  text-decoration: none;
}

.nav-item.active {
  color: #FFFFFF;
  background: var(--primary);
}

.nav-item i {
  font-size: 1.25rem;
  width: 1.25rem;
  text-align: center;
}

.sidebar-footer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.25rem;
  border-top: 1px solid var(--gray-800);
}

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

.sidebar-user-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-300);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-email {
  font-size: 0.6875rem;
  color: var(--gray-500);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-logout {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: none;
  background: transparent;
  color: var(--gray-500);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}

.sidebar-logout:hover {
  background: var(--gray-800);
  color: var(--danger);
}


/* ========================================
   Mobile Header & Overlay
   ======================================== */

.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3.5rem;
  background: var(--gray-900);
  color: #FFFFFF;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1rem;
  z-index: 90;
}

.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  background: transparent;
  color: #FFFFFF;
  cursor: pointer;
  font-size: 1.5rem;
}

.mobile-brand {
  font-size: 1rem;
  font-weight: 700;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
}


/* ========================================
   Cards
   ======================================== */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}


/* ========================================
   Stat Cards
   ======================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
}

.stat-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.stat-icon.primary { background: var(--primary-light); color: var(--primary); }
.stat-icon.success { background: var(--success-light); color: var(--success); }
.stat-icon.warning { background: var(--warning-light); color: var(--warning); }
.stat-icon.danger { background: var(--danger-light); color: var(--danger); }

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-change {
  font-size: 0.75rem;
  margin-top: 0.25rem;
}

.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }


/* ========================================
   Tables
   ======================================== */

.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

thead th {
  text-align: left;
  padding: 0.625rem 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

tbody td {
  padding: 0.625rem 0.75rem;
  border-bottom: 1px solid var(--gray-100);
  color: var(--text-primary);
}

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

tbody tr:nth-child(even) {
  background: var(--gray-50);
}

tbody tr:nth-child(even):hover {
  background: var(--gray-100);
}

td.mono {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}


/* ========================================
   Forms
   ======================================== */

.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.375rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.form-textarea {
  min-height: 5rem;
  resize: vertical;
}


/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
}

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

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

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

.btn-secondary:hover {
  background: var(--gray-100);
}

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

.btn-danger:hover {
  background: #DC2626;
}

.btn-sm {
  padding: 0.3125rem 0.625rem;
  font-size: 0.75rem;
}

.btn-icon {
  width: 2rem;
  height: 2rem;
  padding: 0;
}


/* ========================================
   Badges
   ======================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: 9999px;
  white-space: nowrap;
}

.badge-success {
  background: var(--success-light);
  color: var(--success);
}

.badge-danger {
  background: var(--danger-light);
  color: var(--danger);
}

.badge-warning {
  background: var(--warning-light);
  color: var(--warning);
}

.badge-default {
  background: var(--gray-100);
  color: var(--gray-600);
}

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


/* ========================================
   Modals
   ======================================== */

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  max-height: 85vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-title {
  font-size: 1rem;
  font-weight: 600;
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-size: 1.25rem;
}

.modal-close:hover {
  background: var(--gray-100);
  color: var(--text-primary);
}

.modal-body {
  padding: 1.25rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-color);
}


/* ========================================
   Pagination
   ======================================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  margin-top: 1rem;
}

.pagination-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.pagination-btn:hover {
  background: var(--gray-100);
  color: var(--text-primary);
}

.pagination-btn.active {
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}


/* ========================================
   Search Bar
   ======================================== */

.search-bar {
  position: relative;
  max-width: 320px;
}

.search-bar .search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1rem;
  pointer-events: none;
}

.search-bar input {
  width: 100%;
  padding: 0.5rem 0.75rem 0.5rem 2.25rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.search-bar input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}


/* ========================================
   Toast Notifications
   ======================================== */

.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 300;
  display: flex;
  flex-direction: column-reverse;
  gap: 0.5rem;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.75rem 1rem;
  background: var(--gray-900);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.2s ease;
  max-width: 360px;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.warning { border-left: 3px solid var(--warning); }

.toast-close {
  margin-left: auto;
  background: transparent;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  padding: 0.25rem;
  font-size: 1rem;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(0.5rem); }
  to { opacity: 1; transform: translateY(0); }
}


/* ========================================
   Empty States
   ======================================== */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
  text-align: center;
}

.empty-state i {
  font-size: 3rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.empty-state h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
}

.empty-state p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  max-width: 320px;
}


/* ========================================
   Page Header
   ======================================== */

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.page-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 0.125rem;
}


/* ========================================
   Utility
   ======================================== */

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }


/* ========================================
   Responsive (<768px)
   ======================================== */

@media (max-width: 767px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }

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

  .sidebar-overlay.open {
    display: block;
  }

  .mobile-header {
    display: flex;
  }

  .main-content {
    margin-left: 0;
    padding: 1rem;
    padding-top: 4.5rem;
  }

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

  .toast-container {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
  }

  .toast {
    max-width: none;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}