/* ============================================================================
   Palms Links - Main Design System
   CSS custom properties, reset, typography, layout, components
   ============================================================================

/* ============================================================
   Palms Links — main.css
   Complete design system
   ============================================================ */

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

/* ============================================================
   1. CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Brand Colors */
  --palm-deep:    #006B3F;
  --palm-green:   #00C26A;
  --palm-lime:    #7EE787;
  --palm-neon:    #39FF88;
  --mint-breeze:  #E0FBEA;
  --sand-light:   #F5FBF7;
  --charcoal:     #1A1D1E;
  --soft-grey:    #8A9A93;

  /* Semantic colors */
  --color-primary:        var(--palm-deep);
  --color-primary-hover:  #005530;
  --color-cta:            var(--palm-green);
  --color-cta-hover:      #00a85c;
  --color-success:        var(--palm-lime);
  --color-success-dark:   #4caf50;
  --color-warning:        #f59e0b;
  --color-warning-dark:   #d97706;
  --color-danger:         #ef4444;
  --color-danger-dark:    #dc2626;
  --color-info:           #3b82f6;
  --color-info-dark:      #2563eb;

  /* Text */
  --text-primary:   var(--charcoal);
  --text-secondary: var(--soft-grey);
  --text-inverse:   #ffffff;
  --text-muted:     #6b7280;

  /* Backgrounds */
  --bg-page:        var(--sand-light);
  --bg-surface:     #ffffff;
  --bg-surface-alt: var(--mint-breeze);
  --bg-overlay:     rgba(26, 29, 30, 0.55);

  /* Borders */
  --border-color:   #d1dbd6;
  --border-focus:   var(--palm-green);
  --border-width:   1px;

  /* Border Radius */
  --radius-xs:  4px;
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs:  0 1px 2px rgba(0, 107, 63, 0.06);
  --shadow-sm:  0 2px 8px rgba(0, 107, 63, 0.08);
  --shadow-md:  0 4px 16px rgba(0, 107, 63, 0.12);
  --shadow-lg:  0 8px 32px rgba(0, 107, 63, 0.16);
  --shadow-xl:  0 16px 48px rgba(0, 107, 63, 0.20);
  --shadow-glow: 0 0 16px rgba(57, 255, 136, 0.35);

  /* Typography */
  --font-family:  'Inter', Tahoma, Arial, sans-serif;
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-md: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --line-height-tight:  1.25;
  --line-height-normal: 1.5;
  --line-height-loose:  1.75;
  --font-weight-light:   300;
  --font-weight-normal:  400;
  --font-weight-medium:  500;
  --font-weight-semi:    600;
  --font-weight-bold:    700;
  --font-weight-extra:   800;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow:   400ms ease;
  --transition-bounce: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --sidebar-width:      240px;
  --topbar-height:      60px;
  --container-max:      1200px;
  --container-padding:  var(--space-4);

  /* Z-index scale */
  --z-dropdown: 100;
  --z-sidebar:  200;
  --z-topbar:   300;
  --z-modal:    400;
  --z-toast:    500;
}

/* Dark mode variables */
[data-theme="dark"] {
  --text-primary:   #e8f0ec;
  --text-secondary: #9eb8a8;
  --text-muted:     #7a9488;
  --bg-page:        #0f1610;
  --bg-surface:     #1a2520;
  --bg-surface-alt: #1e2d26;
  --bg-overlay:     rgba(0, 0, 0, 0.70);
  --border-color:   #2d4035;
  --shadow-sm:      0 2px 8px rgba(0,0,0,0.3);
  --shadow-md:      0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg:      0 8px 32px rgba(0,0,0,0.5);
  --color-primary:  #00a85c;
  --color-cta:      #00e07a;
}

/* ============================================================
   2. CSS RESET
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
}

button,
input,
optgroup,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

a:hover {
  text-decoration: underline;
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semi);
  line-height: var(--line-height-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-md); }

p { margin-bottom: var(--space-4); }
p:last-child { margin-bottom: 0; }

/* ============================================================
   3. LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.container-sm { max-width: 640px; }
.container-md { max-width: 768px; }
.container-lg { max-width: 1024px; }

.grid {
  display: grid;
  gap: var(--space-4);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

/* ============================================================
   4. TYPOGRAPHY
   ============================================================ */
.text-xs   { font-size: var(--font-size-xs); }
.text-sm   { font-size: var(--font-size-sm); }
.text-md   { font-size: var(--font-size-md); }
.text-lg   { font-size: var(--font-size-lg); }
.text-xl   { font-size: var(--font-size-xl); }
.text-2xl  { font-size: var(--font-size-2xl); }
.text-3xl  { font-size: var(--font-size-3xl); }
.font-light  { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semi   { font-weight: var(--font-weight-semi); }
.font-bold   { font-weight: var(--font-weight-bold); }
.text-primary-color { color: var(--color-primary); }
.text-muted  { color: var(--text-muted); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success-dark); }

/* ============================================================
   5. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 1.25rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  border-radius: var(--radius-md);
  border: var(--border-width) solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast),
              box-shadow var(--transition-fast),
              transform var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
}

.btn:hover { text-decoration: none; }

.btn:active {
  transform: translateY(1px);
}

.btn:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background-color: var(--color-cta);
  color: #ffffff;
  border-color: var(--color-cta);
}
.btn-primary:hover {
  background-color: var(--color-cta-hover);
  border-color: var(--color-cta-hover);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}
.btn-secondary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--border-color);
}
.btn-ghost:hover {
  background-color: var(--bg-surface-alt);
  border-color: var(--color-primary);
}

.btn-danger {
  background-color: var(--color-danger);
  color: #ffffff;
  border-color: var(--color-danger);
}
.btn-danger:hover {
  background-color: var(--color-danger-dark);
  border-color: var(--color-danger-dark);
  box-shadow: var(--shadow-sm);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
}

/* ============================================================
   6. FORMS
   ============================================================ */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-label .required {
  color: var(--color-danger);
  margin-inline-start: var(--space-1);
}

.form-control {
  display: block;
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  color: var(--text-primary);
  background-color: var(--bg-surface);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-control::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(0, 194, 106, 0.18);
}

.form-control.is-invalid {
  border-color: var(--color-danger);
}
.form-control.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.18);
}

.form-control.is-valid {
  border-color: var(--color-success-dark);
}

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

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238A9A93' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.25rem;
}

[dir="rtl"] select.form-control {
  background-position: left 0.75rem center;
  padding-right: 0.875rem;
  padding-left: 2.25rem;
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.form-check-input {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xs);
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--bg-surface);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  flex-shrink: 0;
}

.form-check-input[type="radio"] {
  border-radius: var(--radius-full);
}

.form-check-input:checked {
  background-color: var(--color-cta);
  border-color: var(--color-cta);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='white' d='M13.3 4.3L6.7 10.9 3.7 7.9 2.3 9.3 6.7 13.7 14.7 5.7z'/%3E%3C/svg%3E");
  background-size: 70%;
  background-repeat: no-repeat;
  background-position: center;
}

.form-check-input[type="radio"]:checked {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle fill='white' cx='8' cy='8' r='4'/%3E%3C/svg%3E");
}

.form-check-input:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
}

.form-check-label {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  cursor: pointer;
}

.form-hint {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.form-error {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  margin-top: var(--space-1);
}

/* Toggle switch */
.form-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.form-toggle input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.form-toggle-track {
  width: 44px;
  height: 24px;
  background-color: var(--border-color);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
  position: relative;
}

.form-toggle-track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-fast);
}

.form-toggle input:checked + .form-toggle-track {
  background-color: var(--color-cta);
}

.form-toggle input:checked + .form-toggle-track::after {
  transform: translateX(20px);
}

/* ============================================================
   7. CARDS
   ============================================================ */
.card {
  background-color: var(--bg-surface);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: var(--border-width) solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.card-header h3,
.card-header h4,
.card-header .card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semi);
  margin: 0;
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: var(--border-width) solid var(--border-color);
  background-color: var(--bg-surface-alt);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ============================================================
   8. BADGES
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.2em 0.65em;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  line-height: 1;
  white-space: nowrap;
}

.badge-success {
  background-color: #dcfce7;
  color: #166534;
}
.badge-warning {
  background-color: #fef3c7;
  color: #92400e;
}
.badge-danger {
  background-color: #fee2e2;
  color: #991b1b;
}
.badge-info {
  background-color: #dbeafe;
  color: #1e40af;
}
.badge-muted {
  background-color: #f1f5f9;
  color: var(--text-muted);
}
.badge-primary {
  background-color: var(--mint-breeze);
  color: var(--color-primary);
}

[data-theme="dark"] .badge-success { background-color: #14532d; color: #86efac; }
[data-theme="dark"] .badge-warning { background-color: #451a03; color: #fcd34d; }
[data-theme="dark"] .badge-danger  { background-color: #450a0a; color: #fca5a5; }
[data-theme="dark"] .badge-info    { background-color: #1e3a5f; color: #93c5fd; }
[data-theme="dark"] .badge-muted   { background-color: #1e2d26; color: var(--text-muted); }

/* ============================================================
   9. ALERTS
   ============================================================ */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  border: var(--border-width) solid transparent;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
}

.alert-icon {
  flex-shrink: 0;
  font-size: 1.1rem;
  margin-top: 1px;
}

.alert-success {
  background-color: #f0fdf4;
  border-color: #bbf7d0;
  color: #14532d;
}
.alert-error {
  background-color: #fff1f2;
  border-color: #fecdd3;
  color: #9f1239;
}
.alert-warning {
  background-color: #fffbeb;
  border-color: #fde68a;
  color: #78350f;
}
.alert-info {
  background-color: #eff6ff;
  border-color: #bfdbfe;
  color: #1e3a8a;
}

/* ============================================================
   10. MODALS
   ============================================================ */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

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

.modal-overlay {
  position: absolute;
  inset: 0;
  background-color: var(--bg-overlay);
  backdrop-filter: blur(2px);
  animation: fadeIn var(--transition-fast);
}

.modal-dialog {
  position: relative;
  background-color: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 520px;
  max-height: calc(100vh - 2rem);
  overflow-y: auto;
  animation: slideUp var(--transition-normal);
  z-index: 1;
}

.modal-dialog-lg { max-width: 720px; }
.modal-dialog-sm { max-width: 380px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: var(--border-width) solid var(--border-color);
}

.modal-header h2,
.modal-header h3,
.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semi);
  margin: 0;
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 1.25rem;
  transition: background-color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--bg-surface-alt);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: var(--border-width) solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ============================================================
   11. TABLES
   ============================================================ */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: var(--border-width) solid var(--border-color);
}

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

.table thead {
  background-color: var(--bg-surface-alt);
}

.table thead th {
  padding: var(--space-3) var(--space-4);
  text-align: start;
  font-weight: var(--font-weight-semi);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: var(--border-width) solid var(--border-color);
  white-space: nowrap;
}

.table tbody tr {
  border-bottom: var(--border-width) solid var(--border-color);
  transition: background-color var(--transition-fast);
}

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

.table tbody tr:hover {
  background-color: var(--bg-surface-alt);
}

.table tbody td {
  padding: var(--space-3) var(--space-4);
  color: var(--text-primary);
  vertical-align: middle;
}

.table-striped tbody tr:nth-child(even) {
  background-color: var(--bg-surface-alt);
}

/* ============================================================
   12. PAGINATION
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-wrap: wrap;
}

.page-item {
  list-style: none;
}

.page-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  background-color: var(--bg-surface);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
}

.page-link:hover {
  background-color: var(--mint-breeze);
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}

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

.page-item.disabled .page-link {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* ============================================================
   13. TOPBAR
   ============================================================ */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-height);
  background-color: var(--bg-surface);
  border-bottom: var(--border-width) solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
  gap: var(--space-4);
  z-index: var(--z-topbar);
  box-shadow: var(--shadow-xs);
}

.topbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  white-space: nowrap;
}

.topbar-logo img {
  height: 32px;
  width: auto;
}

.topbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
}

.topbar-nav a {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.topbar-nav a:hover,
.topbar-nav a.active {
  background-color: var(--mint-breeze);
  color: var(--color-primary);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-inline-start: auto;
}

.topbar-hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: background-color var(--transition-fast);
}

.topbar-hamburger:hover {
  background-color: var(--bg-surface-alt);
}

/* ============================================================
   14. SIDEBAR
   ============================================================ */
.sidebar {
  position: fixed;
  top: var(--topbar-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background-color: var(--bg-surface);
  border-right: var(--border-width) solid var(--border-color);
  overflow-y: auto;
  overflow-x: hidden;
  z-index: var(--z-sidebar);
  transition: transform var(--transition-normal);
  padding: var(--space-4) 0;
}

.sidebar-section {
  padding: var(--space-2) var(--space-4) var(--space-1);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semi);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.nav-item {
  display: block;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 0;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.nav-active {
  background-color: var(--mint-breeze);
  color: var(--color-primary);
  text-decoration: none;
}

.nav-link.nav-active {
  font-weight: var(--font-weight-semi);
}

.nav-link.nav-active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background-color: var(--color-primary);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.7;
}

.nav-link:hover .nav-icon,
.nav-link.nav-active .nav-icon {
  opacity: 1;
}

/* Main content area offset */
.main-content {
  margin-left: var(--sidebar-width);
  padding-top: var(--topbar-height);
  min-height: 100vh;
}

.page-content {
  padding: var(--space-6);
}

/* ============================================================
   15. STAT CARDS
   ============================================================ */
.stat-card {
  background-color: var(--bg-surface);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--mint-breeze);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.stat-body {
  flex: 1;
  min-width: 0;
}

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  line-height: 1.1;
}

.stat-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-delta {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  margin-top: var(--space-2);
}

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

/* ============================================================
   16. LOADING STATES
   ============================================================ */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(0, 194, 106, 0.2);
  border-top-color: var(--color-cta);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.spinner-sm { width: 14px; height: 14px; }
.spinner-lg { width: 32px; height: 32px; border-width: 3px; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--border-color) 25%,
    var(--bg-surface-alt) 50%,
    var(--border-color) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius-sm);
}

.skeleton-text {
  height: 14px;
  margin-bottom: var(--space-2);
  border-radius: var(--radius-sm);
}

.skeleton-title {
  height: 22px;
  width: 60%;
  margin-bottom: var(--space-3);
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================================
   17. TOAST NOTIFICATIONS
   ============================================================ */
.toast-container {
  position: fixed;
  bottom: var(--space-5);
  right: var(--space-5);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
  max-width: 360px;
  width: 100%;
}

[dir="rtl"] .toast-container {
  right: auto;
  left: var(--space-5);
}

.toast {
  pointer-events: all;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  animation: slideUp var(--transition-normal);
  border: var(--border-width) solid transparent;
  background-color: var(--bg-surface);
}

.toast-success { border-color: #bbf7d0; background-color: #f0fdf4; color: #14532d; }
.toast-error   { border-color: #fecdd3; background-color: #fff1f2; color: #9f1239; }
.toast-warning { border-color: #fde68a; background-color: #fffbeb; color: #78350f; }
.toast-info    { border-color: #bfdbfe; background-color: #eff6ff; color: #1e3a8a; }

.toast-icon {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.toast-message { flex: 1; line-height: 1.4; }

.toast-close {
  opacity: 0.5;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 0;
  background: none;
  border: none;
  color: inherit;
  flex-shrink: 0;
}

.toast-close:hover { opacity: 1; }

.toast.hiding {
  animation: fadeOut var(--transition-fast) forwards;
}

/* ============================================================
   18. TABS
   ============================================================ */
.tabs {
  border-bottom: var(--border-width) solid var(--border-color);
  display: flex;
  gap: 0;
}

.tab-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  background: none;
  margin-bottom: -1px;
}

.tab-item:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.tab-item.tab-active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: var(--font-weight-semi);
}

.tab-content {
  display: none;
  padding: var(--space-5) 0;
}

.tab-content.tab-active {
  display: block;
  animation: fadeIn var(--transition-fast);
}

/* ============================================================
   19. RTL SUPPORT
   ============================================================ */
[dir="rtl"] {
  text-align: right;
}

[dir="rtl"] .flex {
  direction: rtl;
}

[dir="rtl"] .sidebar {
  left: auto;
  right: 0;
  border-right: none;
  border-left: var(--border-width) solid var(--border-color);
}

[dir="rtl"] .main-content {
  margin-left: 0;
  margin-right: var(--sidebar-width);
}

[dir="rtl"] .nav-link.nav-active::before {
  left: auto;
  right: 0;
  border-radius: var(--radius-xs) 0 0 var(--radius-xs);
}

[dir="rtl"] .topbar {
  flex-direction: row-reverse;
}

[dir="rtl"] .card-footer,
[dir="rtl"] .modal-footer {
  flex-direction: row-reverse;
}

[dir="rtl"] .ms-auto { margin-right: auto; margin-left: unset; }
[dir="rtl"] .me-auto { margin-left: auto; margin-right: unset; }

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

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.ms-auto { margin-inline-start: auto; }
.me-auto { margin-inline-end: auto; }
.mx-auto { margin-inline: auto; }

.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }

.d-flex  { display: flex; }
.d-block { display: block; }
.d-none  { display: none; }
.d-grid  { display: grid; }
.d-inline-flex { display: inline-flex; }

.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.overflow-hidden { overflow: hidden; }
.overflow-auto   { overflow: auto; }

.rounded    { border-radius: var(--radius-md); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

.shadow    { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }

.border { border: var(--border-width) solid var(--border-color); }

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   21. ANIMATIONS & KEYFRAMES
   ============================================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to   { opacity: 0; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-4px); }
}

.animate-fade-in  { animation: fadeIn var(--transition-normal); }
.animate-slide-up { animation: slideUp var(--transition-normal); }
.animate-pulse    { animation: pulse 2s ease-in-out infinite; }

/* ============================================================
   22. RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --topbar-height: 56px;
    --container-padding: var(--space-4);
  }

  .sidebar {
    transform: translateX(-100%);
  }

  [dir="rtl"] .sidebar {
    transform: translateX(100%);
  }

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

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

  [dir="rtl"] .main-content {
    margin-right: 0;
  }

  .topbar-hamburger {
    display: flex;
  }

  .topbar-nav {
    display: none;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .modal-dialog {
    margin: var(--space-4);
    max-width: 100%;
  }

  .toast-container {
    left: var(--space-3);
    right: var(--space-3);
    bottom: var(--space-3);
    max-width: 100%;
  }

  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }
}

@media (max-width: 480px) {
  .btn-lg {
    padding: 0.75rem 1.25rem;
    font-size: var(--font-size-md);
  }

  .stat-card {
    flex-direction: column;
    gap: var(--space-3);
  }
}

/* ============================================================
   23. REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html { scroll-behavior: auto; }
}

/* ============================================================
   24. FOCUS STYLES (WCAG AA keyboard nav)
   ============================================================ */
:focus-visible {
  outline: 3px solid var(--border-focus);
  outline-offset: 2px;
}

/* ============================================================
   25. DIVIDER
   ============================================================ */
.divider {
  border: none;
  border-top: var(--border-width) solid var(--border-color);
  margin: var(--space-4) 0;
}

/* ============================================================
   26. DROPDOWN
   ============================================================ */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + var(--space-1));
  left: 0;
  min-width: 180px;
  background-color: var(--bg-surface);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  z-index: var(--z-dropdown);
  padding: var(--space-1) 0;
  animation: slideUp var(--transition-fast);
}

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

[dir="rtl"] .dropdown-menu {
  left: auto;
  right: 0;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition-fast);
  border: none;
  background: none;
  width: 100%;
  text-align: start;
}

.dropdown-item:hover {
  background-color: var(--bg-surface-alt);
  text-decoration: none;
}

.dropdown-divider {
  height: var(--border-width);
  background-color: var(--border-color);
  margin: var(--space-1) 0;
}

/* ============================================================
   27. AVATAR
   ============================================================ */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--mint-breeze);
  color: var(--color-primary);
  font-weight: var(--font-weight-semi);
  overflow: hidden;
  flex-shrink: 0;
}

.avatar-sm  { width: 28px; height: 28px; font-size: var(--font-size-xs); }
.avatar-md  { width: 40px; height: 40px; font-size: var(--font-size-sm); }
.avatar-lg  { width: 56px; height: 56px; font-size: var(--font-size-lg); }
.avatar-xl  { width: 80px; height: 80px; font-size: var(--font-size-2xl); }

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}