/* =========================
   Reset et base
   ========================= */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  font-size: var(--font-size-sm);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  transition: top var(--transition-base);
  z-index: 99;
}

.skip-link:focus {
  top: 16px;
}

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

.container {
  width: min(100% - 2rem, var(--container-max));
  margin: 0 auto;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

/* =========================
   Grilles et flexbox
   ========================= */

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

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

/* =========================
   Badges, tags, alertes
   ========================= */

.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0;
  margin: 1.5rem 0 0;
  list-style: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.alert {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  border: 1px solid transparent;
}

.alert--info {
  background: rgba(77, 166, 255, 0.12);
  border-color: rgba(77, 166, 255, 0.3);
}

.alert--success {
  background: rgba(61, 213, 152, 0.12);
  border-color: rgba(61, 213, 152, 0.3);
}

.alert--error {
  background: rgba(255, 111, 145, 0.12);
  border-color: rgba(255, 111, 145, 0.3);
}

/* =========================
   Accessibilité
   ========================= */

.icon {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

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

/* =========================
   Sections et typographie
   ========================= */

.section {
  padding-block: var(--space-xl);
}

.section + .section {
  border-top: 1px solid var(--color-border);
}

.section__intro {
  max-width: 640px;
}

.section__intro p {
  color: var(--color-text-muted);
}

.lead {
  font-size: 1.2rem;
  max-width: 50ch;
}

.eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: 0.75rem;
}

/* =========================
   Composants métriques
   ========================= */

.metric {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  text-align: left;
}

.metric__value {
  font-size: 2rem;
  font-weight: 600;
  display: block;
}

.metric__label {
  margin: 0;
  color: var(--color-text-muted);
}

/* =========================
   Demo grid
   ========================= */

.empty-state {
  margin-top: 2rem;
  text-align: center;
  color: var(--color-text-muted);
}

.demo-grid {
  border: 1px dashed var(--color-border);
  padding: 1rem;
  border-radius: var(--radius-md);
}

.demo-grid > div {
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  text-align: center;
}

/* =========================
   Bouton nav-toggle (menu burger)
   ========================= */

.nav-toggle {
  position: relative;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-toggle__bar {
  position: absolute;
  left: 10px;
  right: 10px;
  height: 3px;
  background: #d6b16a;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle__bar--top {
  top: 14px;
}

.nav-toggle__bar--middle {
  top: 21px;
}

.nav-toggle__bar--bottom {
  top: 28px;
}

.nav-toggle.is-open .nav-toggle__bar--top {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle__bar--middle {
  opacity: 0;
}

.nav-toggle.is-open .nav-toggle__bar--bottom {
  transform: translateY(-7px) rotate(-45deg);
}

/* =========================
   Points de rupture (responsive)
   ========================= */

:root {
  --breakpoint-pc: 1024px;
  --breakpoint-tablette: 768px;
  --breakpoint-mobile: 480px;
}

/* PC (desktop) */
@media (min-width: 1025px) {
  .container {
    max-width: 1200px;
  }
  .header__logo {
    max-width: 160px;
  }
  .nav-toggle {
    display: none;
  }
  .nav-menu {
    display: flex;
  }
}

/* Tablette */
@media (max-width: 1024px) and (min-width: 769px) {
  .container {
    max-width: 900px;
    padding: 0 1.5rem;
  }
  .header__logo {
    max-width: 120px;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-menu {
    display: none;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .container {
    max-width: 100%;
    padding: 0 1rem;
  }
  .header__logo {
    max-width: 80px;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-menu {
    display: none;
  }
}

/* =========================
   Ajustements mobiles
   ========================= */

@media (max-width: 720px) {
  .flex-between {
    align-items: flex-start;
  }
}

/* Centrage mobile pour hero-titre, lead, hero__cta, badge-list */
@media (max-width: 768px) {
  .h1,
  #hero-titre,
  .eyebrow,
  .lead,
  .hero__cta,
  .badge-list {
    text-align: center !important;
    justify-content: center !important;
    align-items: center !important;
    margin-left: auto !important;
    margin-right: auto !important;
  }
  .section--metrics {
    text-align: center !important;
  }
  .section--metrics * {
    text-align: center !important;
    margin-left: auto !important;
    margin-right: auto !important;
  }
}