/* =====================================================
   GLOBAL.CSS - PLOMBERIE PROFESSIONNELLE
   Site vitrine pour services de plomberie et chauffage
   Style: Light, Professionnel et Moderne
   ===================================================== */

/* =====================================================
   1. VARIABLES CSS - SYSTÈME DE DESIGN COMPLET
   ===================================================== */

:root {
  /* ===== COULEURS PRINCIPALES ===== */
  --color-primary: #1E3A8A;
  --color-primary-light: #3B82F6;
  --color-primary-lighter: #60A5FA;
  --color-primary-lightest: #DBEAFE;
  --color-primary-dark: #1E40AF;
  --color-primary-darker: #1E3A8A;
  --color-primary-50: #EFF6FF;
  --color-primary-100: #DBEAFE;
  --color-primary-200: #BFDBFE;
  --color-primary-300: #93C5FD;
  --color-primary-400: #60A5FA;
  --color-primary-500: #3B82F6;
  --color-primary-600: #2563EB;
  --color-primary-700: #1D4ED8;
  --color-primary-800: #1E40AF;
  --color-primary-900: #1E3A8A;

  /* ===== COULEURS SECONDAIRES ===== */
  --color-secondary: #F97316;
  --color-secondary-light: #FB923C;
  --color-secondary-lighter: #FDBA74;
  --color-secondary-lightest: #FED7AA;
  --color-secondary-dark: #EA580C;
  --color-secondary-darker: #C2410C;
  --color-secondary-50: #FFF7ED;
  --color-secondary-100: #FFEDD5;
  --color-secondary-200: #FED7AA;
  --color-secondary-300: #FDBA74;
  --color-secondary-400: #FB923C;
  --color-secondary-500: #F97316;
  --color-secondary-600: #EA580C;
  --color-secondary-700: #C2410C;
  --color-secondary-800: #9A3412;
  --color-secondary-900: #7C2D12;

  /* ===== COULEURS ACCENT ===== */
  --color-accent: #10B981;
  --color-accent-light: #34D399;
  --color-accent-dark: #059669;
  --color-accent-50: #ECFDF5;
  --color-accent-100: #D1FAE5;
  --color-accent-200: #A7F3D0;
  --color-accent-300: #6EE7B7;
  --color-accent-400: #34D399;
  --color-accent-500: #10B981;
  --color-accent-600: #059669;
  --color-accent-700: #047857;
  --color-accent-800: #065F46;
  --color-accent-900: #064E3B;

  /* ===== COULEURS NEUTRES ===== */
  --color-white: #FFFFFF;
  --color-black: #000000;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;

  /* ===== COULEURS SÉMANTIQUES ===== */
  --color-success: #10B981;
  --color-success-light: #D1FAE5;
  --color-success-dark: #047857;
  --color-warning: #F59E0B;
  --color-warning-light: #FEF3C7;
  --color-warning-dark: #D97706;
  --color-error: #EF4444;
  --color-error-light: #FEE2E2;
  --color-error-dark: #DC2626;
  --color-info: #3B82F6;
  --color-info-light: #DBEAFE;
  --color-info-dark: #1D4ED8;

  /* ===== COULEURS DE TEXTE ===== */
  --color-text: #1F2937;
  --color-text-light: #6B7280;
  --color-text-lighter: #9CA3AF;
  --color-text-muted: #9CA3AF;
  --color-text-inverse: #FFFFFF;

  /* ===== COULEURS DE TEXTE SUR FOND COLORÉ (CONTRASTE WCAG) ===== */
  --color-text-on-primary: #FFFFFF;
  --color-text-on-secondary: #FFFFFF;
  --color-text-on-accent: #FFFFFF;
  --color-text-on-dark: #FFFFFF;
  --color-text-on-light: #1F2937;

  /* ===== COULEURS DE FOND ===== */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F9FAFB;
  --color-bg-secondary: #F3F4F6;
  --color-bg-dark: #1F2937;
  --color-bg-overlay: rgba(31, 41, 55, 0.75);
  --color-bg-card: #FFFFFF;
  --color-bg-hover: #F3F4F6;

  /* ===== COULEURS DE BORDURE ===== */
  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;
  --color-border-dark: #D1D5DB;
  --color-border-focus: #3B82F6;

  /* ===== TYPOGRAPHIE ===== */
  --font-family-base: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-family-heading: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-family-mono: 'Roboto Mono', 'Courier New', monospace;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  --font-size-7xl: 4.5rem;

  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;

  /* ===== ESPACEMENT (SPACING) ===== */
  --spacing-0: 0;
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-7: 1.75rem;
  --spacing-8: 2rem;
  --spacing-9: 2.25rem;
  --spacing-10: 2.5rem;
  --spacing-11: 2.75rem;
  --spacing-12: 3rem;
  --spacing-14: 3.5rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;
  --spacing-28: 7rem;
  --spacing-32: 8rem;
  --spacing-36: 9rem;
  --spacing-40: 10rem;
  --spacing-48: 12rem;
  --spacing-56: 14rem;
  --spacing-64: 16rem;

  /* ===== OMBRES (SHADOWS) ===== */
  --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 -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
  --shadow-none: none;
  --shadow-primary: 0 10px 25px -5px rgba(30, 58, 138, 0.3);
  --shadow-secondary: 0 10px 25px -5px rgba(249, 115, 22, 0.3);

  /* ===== BORDER RADIUS ===== */
  --radius-none: 0;
  --radius-sm: 0.125rem;
  --radius-base: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;

  /* ===== 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);
  --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-all: all 200ms cubic-bezier(0.4, 0, 0.2, 1);

  /* ===== Z-INDEX ===== */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-notification: 1080;

  /* ===== DIMENSIONS DE CONTENEUR ===== */
  --container-xs: 480px;
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;

  /* ===== BREAKPOINTS ===== */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;

  /* ===== HAUTEURS SPÉCIFIQUES ===== */
  --header-height: 80px;
  --header-height-mobile: 64px;
  --footer-height: auto;

  /* ===== OPACITÉS ===== */
  --opacity-0: 0;
  --opacity-10: 0.1;
  --opacity-20: 0.2;
  --opacity-30: 0.3;
  --opacity-40: 0.4;
  --opacity-50: 0.5;
  --opacity-60: 0.6;
  --opacity-70: 0.7;
  --opacity-80: 0.8;
  --opacity-90: 0.9;
  --opacity-100: 1;
}


/* =====================================================
   2. RESET CSS MODERNE
   ===================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

hr {
  height: 0;
  color: inherit;
  border-top-width: 1px;
  border-color: var(--color-border);
  margin: var(--spacing-8) 0;
}

abbr[title] {
  text-decoration: underline dotted;
  cursor: help;
}

b,
strong {
  font-weight: var(--font-weight-bold);
}

code,
kbd,
samp,
pre {
  font-family: var(--font-family-mono);
  font-size: 0.9em;
}

small {
  font-size: 80%;
}

sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub {
  bottom: -0.25em;
}

sup {
  top: -0.5em;
}

table {
  text-indent: 0;
  border-color: inherit;
  border-collapse: collapse;
  width: 100%;
}

button,
input,
optgroup,
select,
textarea {
  font-family: inherit;
  font-size: 100%;
  line-height: inherit;
  color: inherit;
  margin: 0;
  padding: 0;
}

button,
select {
  text-transform: none;
}

button,
[type='button'],
[type='reset'],
[type='submit'] {
  -webkit-appearance: button;
  appearance: button;
  background-color: transparent;
  background-image: none;
  cursor: pointer;
}

button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

:-moz-focusring {
  outline: auto;
}

:-moz-ui-invalid {
  box-shadow: none;
}

progress {
  vertical-align: baseline;
}

::-webkit-inner-spin-button,
::-webkit-outer-spin-button {
  height: auto;
}

[type='search'] {
  -webkit-appearance: textfield;
  appearance: textfield;
  outline-offset: -2px;
}

::-webkit-search-decoration {
  -webkit-appearance: none;
}

::-webkit-file-upload-button {
  -webkit-appearance: button;
  font: inherit;
}

summary {
  display: list-item;
  cursor: pointer;
}

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
  display: block;
  max-width: 100%;
  height: auto;
}

img {
  border-style: none;
}


/* =====================================================
   3. TYPOGRAPHIE
   ===================================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  margin-bottom: var(--spacing-4);
  margin-top: 0;
}

h1 {
  font-size: var(--font-size-5xl);
  letter-spacing: var(--letter-spacing-tight);
  margin-bottom: var(--spacing-6);
}

h2 {
  font-size: var(--font-size-4xl);
  letter-spacing: var(--letter-spacing-tight);
  margin-bottom: var(--spacing-5);
}

h3 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-4);
}

h4 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-4);
}

h5 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-3);
}

h6 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-3);
}

p {
  margin-bottom: var(--spacing-4);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-light);
}

p.lead {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
  margin-bottom: var(--spacing-6);
}

p.small {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

ul,
ol {
  margin-bottom: var(--spacing-4);
  padding-left: var(--spacing-6);
}

ul {
  list-style-type: disc;
}

ol {
  list-style-type: decimal;
}

li {
  margin-bottom: var(--spacing-2);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-light);
}

li::marker {
  color: var(--color-primary);
}

ul.list-unstyled,
ol.list-unstyled {
  list-style: none;
  padding-left: 0;
}

ul.list-inline,
ol.list-inline {
  list-style: none;
  padding-left: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

blockquote {
  margin: var(--spacing-8) 0;
  padding: var(--spacing-6);
  border-left: 4px solid var(--color-primary);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  font-style: italic;
  color: var(--color-text-light);
}

blockquote p {
  margin-bottom: 0;
}

blockquote cite {
  display: block;
  margin-top: var(--spacing-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-style: normal;
}

blockquote cite::before {
  content: '— ';
}

code {
  padding: var(--spacing-1) var(--spacing-2);
  background-color: var(--color-gray-100);
  border-radius: var(--radius-base);
  color: var(--color-error);
  font-size: var(--font-size-sm);
}

pre {
  margin-bottom: var(--spacing-4);
  padding: var(--spacing-4);
  background-color: var(--color-gray-900);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  line-height: var(--line-height-normal);
}

pre code {
  padding: 0;
  background-color: transparent;
  color: inherit;
  font-size: var(--font-size-sm);
}

mark {
  background-color: var(--color-secondary-100);
  color: var(--color-text);
  padding: 0.1em 0.3em;
  border-radius: var(--radius-sm);
}


/* =====================================================
   4. HEADER - NAVIGATION PRINCIPALE
   ===================================================== */

.header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-sticky);
  transition: var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--color-border-dark);
}

.header__container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-8);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-base);
  flex-shrink: 0;
}

.header__logo:hover {
  color: var(--color-primary-dark);
  text-decoration: none;
}

.header__logo img {
  height: 40px;
  width: auto;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  flex: 1;
  justify-content: center;
}

.header__nav ul {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.header__nav a {
  display: block;
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  position: relative;
}

.header__nav a:hover {
  background-color: var(--color-bg-hover);
  color: var(--color-primary);
  text-decoration: none;
}

.header__nav a.active {
  color: var(--color-primary);
  background-color: var(--color-primary-50);
}

.header__nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--spacing-4);
  right: var(--spacing-4);
  height: 2px;
  background-color: var(--color-primary);
}

.header__cta {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  flex-shrink: 0;
}

.header__menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: var(--spacing-2);
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-base);
  color: var(--color-text);
}

.header__menu-toggle:hover {
  background-color: var(--color-bg-hover);
  border-color: var(--color-border-dark);
}

.header__menu-toggle svg {
  width: 24px;
  height: 24px;
}

.header__menu-toggle .icon-close {
  display: none;
}

.header__menu-toggle.active .icon-menu {
  display: none;
}

.header__menu-toggle.active .icon-close {
  display: block;
}


/* =====================================================
   5. FOOTER - PIED DE PAGE
   ===================================================== */

.footer {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding: var(--spacing-16) 0 var(--spacing-8);
  margin-top: var(--spacing-20);
}

.footer__container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.footer__main {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-12);
  padding-bottom: var(--spacing-12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: var(--spacing-8);
}

.footer__section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.footer__section h3,
.footer__section h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
}

.footer__section p {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-300);
  margin-bottom: var(--spacing-3);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  text-decoration: none;
  margin-bottom: var(--spacing-4);
}

.footer__logo img {
  height: 36px;
  width: auto;
}

.footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.footer__links a {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-gray-300);
  text-decoration: none;
  transition: var(--transition-base);
}

.footer__links a:hover {
  color: var(--color-white);
  text-decoration: none;
  transform: translateX(4px);
}

.footer__social {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-top: var(--spacing-2);
}

.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  text-decoration: none;
}

.footer__social a:hover {
  background-color: var(--color-primary);
  transform: translateY(-2px);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-4);
  padding-top: var(--spacing-8);
}

.footer__bottom p {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  margin: 0;
}

.footer__bottom-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__bottom-links a {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  text-decoration: none;
  transition: var(--transition-base);
}

.footer__bottom-links a:hover {
  color: var(--color-white);
  text-decoration: underline;
}


/* =====================================================
   6. COMPOSANTS RÉUTILISABLES
   ===================================================== */

/* ----- BOUTONS ----- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-normal);
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-base);
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

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

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-secondary);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
  text-decoration: none;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text);
  border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-bg-hover);
  text-decoration: none;
}

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

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

.btn-block {
  display: flex;
  width: 100%;
}


/* ----- CARTES ----- */

.card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-border-dark);
}

.card__image {
  width: 100%;
  height: 240px;
  object-fit: cover;
  display: block;
}

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

.card__header {
  margin-bottom: var(--spacing-4);
}

.card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--spacing-2);
}

.card__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.card__body {
  margin-bottom: var(--spacing-4);
}

.card__body p {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-4);
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-border);
}

.card-horizontal {
  display: flex;
  flex-direction: row;
}

.card-horizontal .card__image {
  width: 300px;
  height: auto;
  flex-shrink: 0;
}


/* ----- GRILLES ----- */

.grid {
  display: grid;
  gap: var(--spacing-6);
}

.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.grid-auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-auto-fill {
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}


/* ----- SECTIONS ET CONTENEURS ----- */

.section {
  padding: var(--spacing-20) 0;
}

.section-sm {
  padding: var(--spacing-12) 0;
}

.section-lg {
  padding: var(--spacing-32) 0;
}

.section-primary {
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
}

.section-secondary {
  background-color: var(--color-bg-alt);
}

.section-dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-4);
}

.section__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

.container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.container-sm {
  max-width: var(--container-sm);
}

.container-md {
  max-width: var(--container-md);
}

.container-lg {
  max-width: var(--container-lg);
}

.container-fluid {
  max-width: 100%;
  padding: 0 var(--spacing-6);
}


/* ----- INPUTS ET FORMULAIRES ----- */

.input,
.textarea,
.select {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
}

.input:hover,
.textarea:hover,
.select:hover {
  border-color: var(--color-border-dark);
}

.input:focus,
.textarea:focus,
.select:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  outline: none;
}

.input:disabled,
.textarea:disabled,
.select:disabled {
  background-color: var(--color-gray-100);
  cursor: not-allowed;
  opacity: 0.6;
}

.textarea {
  min-height: 120px;
  resize: vertical;
}

.input-group {
  margin-bottom: var(--spacing-4);
}

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

.label-required::after {
  content: ' *';
  color: var(--color-error);
}

.input-error {
  border-color: var(--color-error);
}

.input-error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.error-message {
  display: block;
  margin-top: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-error);
}

.checkbox,
.radio {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  cursor: pointer;
  user-select: none;
}

.checkbox input,
.radio input {
  width: 18px;
  height: 18px;
  cursor: pointer;
}


/* ----- ALERTES ----- */

.alert {
  padding: var(--spacing-4) var(--spacing-5);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  margin-bottom: var(--spacing-4);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
}

.alert__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.alert__content {
  flex: 1;
}

.alert__title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-1);
}

.alert-success {
  background-color: var(--color-success-light);
  border-color: var(--color-success);
  color: var(--color-success-dark);
}

.alert-warning {
  background-color: var(--color-warning-light);
  border-color: var(--color-warning);
  color: var(--color-warning-dark);
}

.alert-error {
  background-color: var(--color-error-light);
  border-color: var(--color-error);
  color: var(--color-error-dark);
}

.alert-info {
  background-color: var(--color-info-light);
  border-color: var(--color-info);
  color: var(--color-info-dark);
}


/* ----- BADGES ----- */

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.badge-primary {
  background-color: var(--color-primary-100);
  color: var(--color-primary-800);
}

.badge-secondary {
  background-color: var(--color-secondary-100);
  color: var(--color-secondary-800);
}

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

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

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


/* ----- MODALES ----- */

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4);
}

.modal.active {
  display: flex;
}

.modal__backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-bg-overlay);
  z-index: var(--z-modal-backdrop);
}

.modal__content {
  position: relative;
  z-index: var(--z-modal);
  background-color: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal__header {
  padding: var(--spacing-6);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.modal__close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  color: var(--color-text-muted);
}

.modal__close:hover {
  background-color: var(--color-bg-hover);
  color: var(--color-text);
}

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

.modal__footer {
  padding: var(--spacing-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-3);
}


/* ----- DROPDOWNS ----- */

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown__toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  cursor: pointer;
}

.dropdown__menu {
  position: absolute;
  top: calc(100% + var(--spacing-2));
  left: 0;
  min-width: 200px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-2);
  z-index: var(--z-dropdown);
  display: none;
}

.dropdown__menu.active {
  display: block;
}

.dropdown__item {
  display: block;
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  cursor: pointer;
}

.dropdown__item:hover {
  background-color: var(--color-bg-hover);
  color: var(--color-primary);
  text-decoration: none;
}

.dropdown__divider {
  height: 1px;
  background-color: var(--color-border);
  margin: var(--spacing-2) 0;
}


/* =====================================================
   7. CLASSES UTILITAIRES
   ===================================================== */

/* ----- TEXTE ----- */

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.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); }
.text-4xl { font-size: var(--font-size-4xl); }

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

.text-light { font-weight: var(--font-weight-light); }
.text-normal { font-weight: var(--font-weight-normal); }
.text-medium { font-weight: var(--font-weight-medium); }
.text-semibold { font-weight: var(--font-weight-semibold); }
.text-bold { font-weight: var(--font-weight-bold); }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-white { color: var(--color-white); }


/* ----- FOND ----- */

.bg-white { background-color: var(--color-white); }
.bg-gray { background-color: var(--color-gray-100); }
.bg-primary { background-color: var(--color-primary); color: var(--color-text-on-primary); }
.bg-secondary { background-color: var(--color-secondary); color: var(--color-text-on-secondary); }
.bg-dark { background-color: var(--color-bg-dark); color: var(--color-text-on-dark); }


/* ----- ESPACEMENT ----- */

.m-0 { margin: 0; }
.mt-4 { margin-top: var(--spacing-4); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }
.my-8 { margin-top: var(--spacing-8); margin-bottom: var(--spacing-8); }
.mx-auto { margin-left: auto; margin-right: auto; }

.p-0 { padding: 0; }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }
.py-8 { padding-top: var(--spacing-8); padding-bottom: var(--spacing-8); }
.px-6 { padding-left: var(--spacing-6); padding-right: var(--spacing-6); }


/* ----- FLEXBOX ----- */

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.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; }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }


/* ----- UTILITAIRES DIVERS ----- */

.w-full { width: 100%; }
.h-full { height: 100%; }
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.rounded { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }


/* =====================================================
   8. RESPONSIVE - MEDIA QUERIES
   ===================================================== */

/* ----- TABLETTES ET MOINS (max-width: 1024px) ----- */

@media (max-width: 1024px) {
  :root {
    --header-height: var(--header-height-mobile);
  }

  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); }

  .section { padding: var(--spacing-16) 0; }
  .section-lg { padding: var(--spacing-24) 0; }

  .header__nav {
    position: fixed;
    top: var(--header-height-mobile);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-top: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-6);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
  }

  .header__nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .header__nav ul {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .header__nav a {
    padding: var(--spacing-4);
  }

  .header__menu-toggle {
    display: flex;
  }

  .header__cta .btn {
    display: none;
  }

  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .card-horizontal {
    flex-direction: column;
  }

  .card-horizontal .card__image {
    width: 100%;
    height: 240px;
  }

  .footer__main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-8);
  }
}


/* ----- MOBILES (max-width: 640px) ----- */

@media (max-width: 640px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
  }

  .container,
  .container-fluid {
    padding: 0 var(--spacing-4);
  }

  .section { padding: var(--spacing-12) 0; }
  .section-lg { padding: var(--spacing-16) 0; }

  .header__container {
    padding: 0 var(--spacing-4);
  }

  .header__logo {
    font-size: var(--font-size-lg);
  }

  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }

  .grid-auto-fit,
  .grid-auto-fill {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }

  .btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
  }

  .footer__main {
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: var(--spacing-6);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    text-align: center;
  }

  .footer__bottom-links {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-3);
  }

  .modal__content {
    max-width: 100%;
    margin: var(--spacing-4);
  }

  .card__footer {
    flex-direction: column;
    align-items: stretch;
  }

  .section__title {
    font-size: var(--font-size-3xl);
  }

  .section__subtitle {
    font-size: var(--font-size-lg);
  }
}


/* ----- GRANDS ÉCRANS (min-width: 1536px) ----- */

@media (min-width: 1536px) {
  .container {
    max-width: var(--container-2xl);
  }

  h1 { font-size: var(--font-size-6xl); }
  h2 { font-size: var(--font-size-5xl); }

  .section { padding: var(--spacing-24) 0; }
  .section-lg { padding: var(--spacing-40) 0; }
}