/**
 * Modern Design System for All that Dance - Member Area
 * Style: Minimalist & Clean (inspired by Notion/Linear)
 *
 * Table of Contents:
 * 1. CSS Variables (Design Tokens)
 * 2. Base & Resets
 * 3. Typography
 * 4. Layout Components
 * 5. Button System
 * 6. Form Components
 * 7. Table Components
 * 8. Card Components
 * 9. Tabs System
 * 10. Authentication Pages
 * 11. Sidebar Navigation
 * 12. Top Bar
 * 13. Utilities
 * 14. Responsive Overrides
 */

/* ========================================
   1. CSS VARIABLES (Design Tokens)
   ======================================== */

:root {
  /* Colors - Minimalist Palette */
  --color-background: #fafafa;
  --color-surface: #ffffff;
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #6b7280;
  --color-text-tertiary: #9ca3af;

  /* Accent Colors */
  --color-accent-primary: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-accent-light: #dbeafe;

  /* Semantic Colors */
  --color-success: #10b981;
  --color-success-light: #d1fae5;
  --color-error: #ef4444;
  --color-error-light: #fee2e2;
  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;

  /* Borders */
  --color-border-light: #e5e7eb;
  --color-border-medium: #d1d5db;
  --color-border-focus: #3b82f6;

  /* Typography */
  --font-family-base: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-mono: 'SF Mono', Monaco, monospace;

  /* Font Sizes */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;

  /* Spacing System (8px base) */
  --spacing-0: 0;
  --spacing-1: 0.25rem;    /* 4px */
  --spacing-2: 0.5rem;     /* 8px */
  --spacing-3: 0.75rem;    /* 12px */
  --spacing-4: 1rem;       /* 16px */
  --spacing-5: 1.25rem;    /* 20px */
  --spacing-6: 1.5rem;     /* 24px */
  --spacing-8: 2rem;       /* 32px */
  --spacing-10: 2.5rem;    /* 40px */
  --spacing-12: 3rem;      /* 48px */
  --spacing-16: 4rem;      /* 64px */

  /* Shadows - Subtle Elevation */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 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);
  --shadow-focus: 0 0 0 3px rgba(59, 130, 246, 0.1);

  /* Border Radius */
  --radius-sm: 0.25rem;    /* 4px */
  --radius-md: 0.375rem;   /* 6px */
  --radius-lg: 0.5rem;     /* 8px */
  --radius-xl: 0.75rem;    /* 12px */
  --radius-2xl: 1rem;      /* 16px */
  --radius-full: 9999px;   /* pills/badges */

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Easing functions */
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
}

/* ========================================
   2. BASE & RESETS
   ======================================== */

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

/* Modern base styles */
body {
  font-family: var(--font-family-base);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   3. TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
}

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

p {
  margin: 0 0 var(--spacing-4);
}

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

a:hover {
  color: var(--color-accent-hover);
}

.link-secondary {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: color var(--transition-base);
}

.link-secondary:hover {
  color: var(--color-accent-primary);
}

/* ========================================
   4. LAYOUT COMPONENTS
   ======================================== */

.app-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
  background-color: var(--color-background);
}

/* Sidebar - prend toute la hauteur */
.app-layout .sidebar,
.app-layout aside,
.page-container .sidebar,
aside.sidebar {
  grid-column: 1;
  grid-row: 1 / -1;
  background-color: var(--color-surface) !important;
  border-right: 1px solid var(--color-border-light);
  overflow-y: auto;
  position: sticky;
  top: 0;
  height: 100vh;
}

/* Top bar - colonne 2, rangée 1 */
.app-layout .app-topbar {
  grid-column: 2;
  grid-row: 1;
}

/* Main content - colonne 2, rangée 2 */
.app-layout .app-main {
  grid-column: 2;
  grid-row: 2;
  padding: var(--spacing-6) var(--spacing-6);
  max-width: 1400px;
  width: 100%;
  overflow-x: auto;
}

/* ========================================
   5. BUTTON SYSTEM
   ======================================== */

/* Base Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  line-height: 1.5;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  font-family: inherit;
}

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

/* Primary Button */
.btn-primary {
  background-color: var(--color-accent-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-accent-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

/* Outline Button */
.btn-outline {
  background-color: transparent;
  border-color: var(--color-border-medium);
  color: var(--color-text-primary);
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--color-background);
  border-color: var(--color-accent-primary);
  color: var(--color-accent-primary);
}

/* Ghost Button */
.btn-ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-background);
  color: var(--color-text-primary);
}

/* Button Sizes */
.btn-sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--text-xs);
}

.btn-lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--text-base);
}

/* Block Button */
.btn-block {
  width: 100%;
}

/* Icon Button */
.btn-icon {
  padding: var(--spacing-2);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: transparent;
  color: var(--color-text-secondary);
  border: none;
}

.btn-icon:hover:not(:disabled) {
  background-color: var(--color-background);
  color: var(--color-accent-primary);
}

/* ========================================
   6. FORM COMPONENTS
   ======================================== */

/* Form Field Container */
.form-field {
  position: relative;
  margin-bottom: var(--spacing-5);
}

/* Input Base */
.form-control {
  width: 100%;
  padding: var(--spacing-4);
  border: 1px solid var(--color-border-medium);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-family: inherit;
  color: var(--color-text-primary);
  background-color: var(--color-surface);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-control::placeholder {
  color: var(--color-text-tertiary);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-focus);
}

/* Floating Label */
.form-control-label {
  position: absolute;
  left: var(--spacing-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
  pointer-events: none;
  transition: all var(--transition-base);
  font-size: var(--text-base);
  background-color: transparent;
  padding: 0 var(--spacing-1);
}

.form-control:focus + .form-control-label,
.form-control:not(:placeholder-shown) + .form-control-label,
.form-control:-webkit-autofill + .form-control-label {
  top: -8px;
  transform: translateY(0);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--color-accent-primary);
  background-color: var(--color-surface);
}

/* Gérer le fond jaune de l'autocomplete Chrome */
.form-control:-webkit-autofill,
.form-control:-webkit-autofill:hover,
.form-control:-webkit-autofill:focus {
  -webkit-box-shadow: 0 0 0 1000px var(--color-surface) inset;
  -webkit-text-fill-color: var(--color-text-primary);
  transition: background-color 5000s ease-in-out 0s;
}

/* Validation States */
.form-control.is-valid {
  border-color: var(--color-success);
}

.form-control.is-valid:focus {
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-control.is-invalid {
  border-color: var(--color-error);
}

.form-control.is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Form Hint */
.form-hint {
  margin-top: var(--spacing-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* Form Error */
.form-error {
  display: none;
  margin-top: var(--spacing-2);
  font-size: var(--text-sm);
  color: var(--color-error);
}

.form-control.is-invalid ~ .form-error {
  display: block;
}

/* Select Dropdown */
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%236b7280' d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-3) center;
  background-size: 16px;
  padding-right: var(--spacing-10);
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-3);
}

.form-check-input {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border-medium);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
}

.form-check-input:checked {
  background-color: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
}

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

/* ========================================
   7. TABLE COMPONENTS
   ======================================== */

.table-container {
  width: 100%;
  overflow-x: auto;
  margin-bottom: var(--spacing-6);
}

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.data-table-header {
  background-color: var(--color-background);
  border-bottom: 1px solid var(--color-border-light);
}

.data-table-heading {
  padding: var(--spacing-4) var(--spacing-6);
  text-align: left;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-table-body {
  background-color: var(--color-surface);
}

.data-table-row {
  transition: background-color var(--transition-base);
  border-bottom: 1px solid var(--color-border-light);
}

.data-table-row:hover {
  background-color: var(--color-background);
}

.data-table-row:last-child {
  border-bottom: none;
}

.data-table-cell {
  padding: var(--spacing-5) var(--spacing-6);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
}

/* ========================================
   8. CARD COMPONENTS
   ======================================== */

.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-6);
  margin-bottom: var(--spacing-6);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-5);
  padding-bottom: var(--spacing-4);
  border-bottom: 1px solid var(--color-border-light);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.card-body {
  display: grid;
  gap: var(--spacing-4);
}

.card-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--spacing-4);
  padding: var(--spacing-3) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.card-row:last-child {
  border-bottom: none;
}

.card-label {
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.card-value {
  color: var(--color-text-primary);
  font-size: var(--text-sm);
}

/* ========================================
   9. TABS SYSTEM
   ======================================== */

.tabs-modern {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-6);
}

.tabs-input {
  display: none;
}

.tabs-header {
  display: flex;
  gap: var(--spacing-1);
  padding: var(--spacing-2);
  background-color: var(--color-background);
  border-bottom: 2px solid var(--color-border-light);
}

.tab-label {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  position: relative;
}

.tab-label:hover {
  background-color: rgba(59, 130, 246, 0.05);
  color: var(--color-text-primary);
}

#tab1:checked ~ .tabs-header .tab-label[for="tab1"],
#tab2:checked ~ .tabs-header .tab-label[for="tab2"],
#tab3:checked ~ .tabs-header .tab-label[for="tab3"] {
  background-color: var(--color-accent-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.tab-icon {
  font-size: var(--text-base);
}

.tabs-content {
  padding: var(--spacing-6);
}

.tab-panel {
  display: none;
  animation: fadeIn var(--transition-base);
}

#tab1:checked ~ .tabs-content .tab-panel:nth-of-type(1),
#tab2:checked ~ .tabs-content .tab-panel:nth-of-type(2),
#tab3:checked ~ .tabs-content .tab-panel:nth-of-type(3) {
  display: block;
}

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

/* ========================================
   10. AUTHENTICATION PAGES
   ======================================== */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-6);
  background-color: var(--color-background);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-8);
}

.auth-header {
  text-align: center;
  margin-bottom: var(--spacing-8);
}

.auth-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2);
}

.auth-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.auth-form {
  margin-bottom: var(--spacing-6);
}

.auth-footer {
  text-align: center;
  margin-top: var(--spacing-4);
}

.auth-divider {
  position: relative;
  text-align: center;
  margin: var(--spacing-6) 0;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

.auth-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background-color: var(--color-border-light);
  z-index: 0;
}

.auth-divider span {
  position: relative;
  z-index: 1;
  background-color: var(--color-surface);
  padding: 0 var(--spacing-4);
}

/* Error message in auth */
.error-message {
  background-color: var(--color-error-light);
  color: var(--color-error);
  padding: var(--spacing-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-6);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border: 1px solid var(--color-error);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

/* ========================================
   11. SIDEBAR NAVIGATION
   ======================================== */

.sidebar {
  background-color: var(--color-surface) !important;
  padding: var(--spacing-6);
  border-right: 1px solid var(--color-border-light);
}

.sidebar-nav {
  margin-top: var(--spacing-8);
  background-color: transparent !important;
}

.sidebar-menu {
  list-style: none;
  padding: 0;
  margin: 0;
  background-color: transparent !important;
}

.sidebar-item {
  background-color: transparent !important;
}

.sidebar-item {
  margin-bottom: var(--spacing-2);
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  position: relative;
  color: var(--color-text-primary) !important;
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
}

.sidebar-link:hover {
  background-color: rgba(59, 130, 246, 0.1) !important;
  color: var(--color-accent-primary) !important;
}

.sidebar-link.active {
  background-color: var(--color-accent-primary) !important;
  color: #ffffff !important;
  font-weight: var(--font-semibold);
}

.sidebar-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background-color: #ffffff;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.sidebar-icon {
  width: 20px;
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.sidebar-text {
  flex: 1;
}

/* ========================================
   12. TOP BAR
   ======================================== */

.top-bar {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xs);
  position: sticky;
  top: 0;
  z-index: 100;
}

.top-bar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-4) var(--spacing-6);
  max-width: 1400px;
  margin: 0 auto;
}

.top-bar-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.user-name {
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  font-size: var(--text-base);
}

.user-id {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  padding: var(--spacing-1) var(--spacing-3);
  background-color: var(--color-background);
  border-radius: var(--radius-full);
}

.top-bar-actions {
  display: flex;
  gap: var(--spacing-2);
}

.btn-topbar {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  border: 1px solid var(--color-border-medium);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  transition: all var(--transition-base);
  text-decoration: none;
  background-color: transparent;
}

.btn-topbar:hover {
  background-color: var(--color-background);
  border-color: var(--color-border-focus);
  color: var(--color-accent-primary);
}

.btn-topbar-logout:hover {
  background-color: var(--color-error-light);
  border-color: var(--color-error);
  color: var(--color-error);
}

/* ========================================
   13. UTILITIES
   ======================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }

/* Alert Components */
.alert {
  padding: var(--spacing-4) var(--spacing-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4);
}

.alert-error {
  background-color: var(--color-error-light);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

.alert-success {
  background-color: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.alert-warning {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

.alert-icon {
  flex-shrink: 0;
  font-size: var(--text-lg);
}

/* ========================================
   14. RESPONSIVE OVERRIDES
   ======================================== */

/* Remove margin/padding from app-main children */
.app-main > h1:first-child,
.app-main > h2:first-child,
.app-main > h3:first-child {
  margin-top: 0;
}

/* Tablet and below */
@media (max-width: 1024px) {
  .app-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr;
  }

  .app-layout .sidebar,
  .app-layout aside {
    position: fixed;
    left: -260px;
    z-index: 1000;
    transition: left var(--transition-base);
    box-shadow: var(--shadow-xl);
  }

  .app-layout .sidebar.is-open,
  .app-layout aside.is-open {
    left: 0;
  }

  .app-layout .app-topbar {
    grid-column: 1;
    grid-row: 1;
  }

  .app-layout .app-main {
    grid-column: 1;
    grid-row: 2;
    padding: var(--spacing-6) var(--spacing-4);
  }

  .card-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-2);
  }
}

/* Mobile Menu Button */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-primary);
  cursor: pointer;
  padding: var(--spacing-2);
  margin-right: var(--spacing-3);
}

.mobile-menu-toggle:hover {
  color: var(--color-accent-primary);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 998;
}

body.mobile-menu-open .mobile-menu-overlay {
  display: block;
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --spacing-8: 1.5rem;
    --spacing-10: 2rem;
  }

  .auth-card {
    padding: var(--spacing-6);
  }

  .auth-title {
    font-size: var(--text-2xl);
  }

  /* Show mobile menu button */
  .mobile-menu-toggle {
    display: block !important;
  }

  /* Hide sidebar by default on mobile */
  .app-layout .sidebar,
  .app-layout aside,
  .page-container .sidebar,
  aside.sidebar {
    position: fixed !important;
    top: 0 !important;
    left: -260px !important;
    width: 260px !important;
    height: 100vh !important;
    z-index: 999 !important;
    transition: left 0.3s ease !important;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1) !important;
  }

  /* Show sidebar when menu is open */
  body.mobile-menu-open .app-layout .sidebar,
  body.mobile-menu-open .app-layout aside,
  body.mobile-menu-open .page-container .sidebar,
  body.mobile-menu-open aside.sidebar {
    left: 0 !important;
  }

  /* Single column layout */
  .app-layout {
    grid-template-columns: 1fr !important;
    grid-template-rows: auto 1fr !important;
  }

  /* Top bar - full width */
  .app-layout .app-topbar {
    grid-column: 1 !important;
    grid-row: 1 !important;
  }

  /* Main content - full width */
  .app-layout .app-main {
    grid-column: 1 !important;
    grid-row: 2 !important;
    padding: var(--spacing-4) var(--spacing-4) !important;
  }

  /* Responsive Tables - Card Layout */
  .data-table-header {
    display: none;
  }

  .data-table,
  .data-table-body,
  .data-table-row {
    display: block;
  }

  .data-table-row {
    margin-bottom: var(--spacing-4);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
  }

  .data-table-cell {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 1px solid var(--color-border-light);
  }

  .data-table-cell:last-child {
    border-bottom: none;
  }

  .data-table-cell::before {
    content: attr(data-label);
    font-weight: var(--font-semibold);
    color: var(--color-text-secondary);
    margin-right: var(--spacing-4);
  }

  .tabs-header {
    flex-direction: column;
    gap: var(--spacing-2);
  }

  .tab-label {
    justify-content: flex-start;
  }

  .top-bar {
    padding: var(--spacing-3) var(--spacing-4) !important;
  }

  .top-bar-content {
    flex-direction: column;
    gap: var(--spacing-3);
    align-items: flex-start;
  }

  .top-bar-info {
    display: flex !important;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--text-sm);
    width: 100%;
  }

  .top-bar-info .user-name,
  .top-bar-info .user-id {
    display: inline-block;
  }

  .top-bar-actions {
    width: 100%;
    justify-content: flex-end;
    gap: var(--spacing-2);
  }

  .btn-topbar {
    padding: var(--spacing-2) var(--spacing-3) !important;
    font-size: var(--text-sm) !important;
  }

  /* Reduce card padding on mobile */
  .card {
    padding: var(--spacing-4);
  }

  .card-header {
    padding: var(--spacing-3) var(--spacing-4);
  }

  .card-body {
    padding: var(--spacing-4);
  }

  /* Messages page responsive */
  .containerMessage {
    flex-direction: column !important;
    height: auto !important;
  }

  .listeMessage {
    width: 100% !important;
    max-height: 300px;
    border-right: none !important;
    border-bottom: 1px solid var(--color-border-light);
  }

  .contenuMessage {
    width: 100% !important;
    padding: var(--spacing-4) !important;
  }
}

/* Small mobile */
@media (max-width: 375px) {
  .auth-page {
    padding: var(--spacing-4);
  }

  .btn {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--text-xs);
  }
}