/* ============================================
   CalcuFrance — Global Styles
   Design institutionnel inspiré du DSFR
   Propre, structuré, professionnel
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Couleurs — palette institutionnelle */
  --color-primary: #000091;
  --color-primary-hover: #1212FF;
  --color-primary-light: #ECECFE;
  --color-primary-bg: #F5F5FE;
  --color-accent: #C9191E;
  --color-accent-hover: #9D0B0F;
  --color-success: #18753C;
  --color-success-bg: #B8FEC9;
  --color-info: #0063CB;
  --color-info-bg: #E8EDFF;
  --color-warning: #D64D00;
  --color-warning-bg: #FFE9E6;
  --color-bg: #F6F6F6;
  --color-surface: #FFFFFF;
  --color-text: #161616;
  --color-text-secondary: #666666;
  --color-text-mention: #929292;
  --color-border: #E5E5E5;
  --color-border-strong: #CECECE;
  --color-border-active: #000091;

  /* Typographie */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-display: 'Plus Jakarta Sans', var(--font-main);
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Tailles de texte */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.75rem;
  --text-4xl: 2.25rem;

  /* Espacements */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Bordures & ombres — design plat, ombres minimales */
  --radius-sm: 4px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --radius-xl: 8px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 6px 18px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 12px 28px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Layout */
  --max-width: 1140px;
  --header-height: 56px;
}

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

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

body {
  font-family: var(--font-main);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

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

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

/* --- Typographie --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
}

h1 {
  font-size: var(--text-3xl);
  font-weight: 800;
}

h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
}

h3 {
  font-size: var(--text-xl);
  font-weight: 700;
}

h4 {
  font-size: var(--text-lg);
  font-weight: 600;
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

strong {
  font-weight: 600;
  color: var(--color-text);
}

/* --- Layout global --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

main {
  flex: 1;
  padding-top: var(--header-height);
}

/* --- Header — barre institutionnelle sobre --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 2px solid var(--color-primary);
  transition: box-shadow var(--transition-base);
}

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

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-lg);
  color: var(--color-primary);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.header__logo:hover {
  opacity: 0.8;
  text-decoration: none;
}

.header__logo svg {
  width: 28px;
  height: 28px;
}

.header__nav {
  display: none;
  align-items: center;
  gap: 0;
}

.header__nav-link {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

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

.header__nav-link--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}

.header__menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.header__menu-btn:hover {
  background-color: var(--color-primary-light);
}

.header__menu-btn svg {
  width: 24px;
  height: 24px;
  color: var(--color-text);
}

/* Mobile nav overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-surface);
  z-index: 999;
  padding: var(--space-lg) var(--space-md);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity var(--transition-base), transform var(--transition-base);
  border-top: 1px solid var(--color-border);
}

.mobile-nav--open {
  display: flex;
  flex-direction: column;
  gap: 0;
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav__link {
  display: block;
  padding: var(--space-md) var(--space-lg);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link--active {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* --- Footer — institutionnel --- */
.footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-2xl) 0 var(--space-lg);
  margin-top: var(--space-3xl);
  border-top: 3px solid var(--color-primary);
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer__logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-lg);
  color: #FFFFFF;
}

.footer__desc {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
  margin-bottom: 0;
}

.footer__section h4 {
  color: #FFFFFF;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: center;
  text-align: center;
}

.footer__copyright {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 0;
}

.footer__legal {
  display: flex;
  gap: var(--space-md);
}

.footer__legal a {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__legal a:hover {
  color: rgba(255, 255, 255, 0.7);
}

/* --- Breadcrumb --- */
.breadcrumb {
  padding: var(--space-md) 0;
  font-size: var(--text-sm);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.breadcrumb__item:not(:last-child)::after {
  content: '>';
  color: var(--color-text-mention);
  margin-left: var(--space-xs);
  font-size: var(--text-xs);
}

.breadcrumb__link {
  color: var(--color-primary);
  text-decoration: none;
  transition: text-decoration var(--transition-fast);
}

.breadcrumb__link:hover {
  text-decoration: underline;
}

.breadcrumb__current {
  color: var(--color-text-secondary);
}

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

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

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

.text-accent {
  color: var(--color-accent);
}

.text-success {
  color: var(--color-success);
}

/* --- Responsive --- */
@media (min-width: 768px) {
  h1 {
    font-size: var(--text-4xl);
  }

  .container {
    padding: 0 var(--space-xl);
  }

  .header__nav {
    display: flex;
  }

  .header__menu-btn {
    display: none;
  }

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

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-2xl);
  }
}

/* ---- Cookie Banner ---- */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--color-surface);
  border-top: 2px solid var(--color-primary);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
  padding: var(--space-md) var(--space-lg);
  display: none;
}

.cookie-banner--visible {
  display: block;
}

.cookie-banner__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: flex-start;
}

.cookie-banner__text {
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.5;
  margin: 0;
}

.cookie-banner__text a {
  color: var(--color-primary);
  text-decoration: underline;
}

.cookie-banner__actions {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-shrink: 0;
}

.cookie-banner__accept {
  display: inline-block;
  padding: 10px 28px;
  background: var(--color-primary);
  color: #FFFFFF;
  font-family: var(--font-main);
  font-size: var(--text-sm);
  font-weight: 600;
  border: none;
  border-radius: 0;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.cookie-banner__accept:hover {
  background: var(--color-primary-hover);
}

.cookie-banner__refuse {
  display: inline-block;
  padding: 0;
  background: none;
  color: var(--color-text-mention);
  font-family: var(--font-main);
  font-size: var(--text-xs);
  font-weight: 400;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.cookie-banner__refuse:hover {
  color: var(--color-text-secondary);
}

@media (min-width: 768px) {
  .cookie-banner__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}