@import './variables.css';

/* ============================================================
   RESET & BASE
   ============================================================ */

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

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

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-base);
  color: var(--color-gray-700);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img {
  height: auto;
}

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

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

ul, ol {
  list-style: none;
}

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

p {
  max-width: 70ch;
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.section {
  padding-block: var(--space-24);
}

.section--sm {
  padding-block: var(--space-16);
}

.section--dark {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: var(--color-white);
}

.section--gray {
  background-color: var(--color-gray-50);
}

.section--accent {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.section--accent h1,
.section--accent h2,
.section--accent h3 {
  color: var(--color-white);
}

/* Grid helpers */
.grid {
  display: grid;
  gap: var(--space-8);
}

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

.flex {
  display: flex;
  gap: var(--space-6);
}

.flex--center {
  align-items: center;
  justify-content: center;
}

.flex--between {
  align-items: center;
  justify-content: space-between;
}

/* ============================================================
   TYPOGRAPHIE GLOBALE
   ============================================================ */

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

.text-sm  { font-size: var(--font-size-sm); }
.text-lg  { font-size: var(--font-size-lg); }
.text-xl  { font-size: var(--font-size-xl); }

.text-muted  { color: var(--color-gray-400); }
.text-accent { color: var(--color-accent); }
.text-white  { color: var(--color-white); }

.font-bold     { font-weight: var(--font-weight-bold); }
.font-semibold { font-weight: var(--font-weight-semibold); }

/* ============================================================
   HEADER
   ============================================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  background-color: transparent;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
  background-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 0;
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-white);
  text-decoration: none;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.header__logo svg {
  margin-right: var(--space-2);
  flex-shrink: 0;
}

.header__logo-dot {
  color: var(--color-accent);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.header__nav-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
}

.header__nav-link:hover,
.header__nav-link[aria-current="page"] {
  color: var(--color-white);
}

.header__nav-link:hover::after,
.header__nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.header__toggle:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.header__toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-400);
  padding-block: var(--space-16) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer__logo {
  font-family: var(--font-family-heading);
  font-size: 0;
  font-weight: var(--font-weight-extrabold);
  color: var(--color-white);
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: center;
  margin-bottom: var(--space-4);
  white-space: nowrap;
}

.footer__logo span {
  font-size: var(--font-size-xl);
}

.footer__tagline {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-6);
  max-width: 280px;
}

.footer__socials {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-gray-400);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.footer__social-link:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.footer__col-title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  list-style: none;
}

.footer__link {
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer__copyright {
  font-size: var(--font-size-xs);
}

.footer__legal-links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.footer__legal-link {
  font-size: var(--font-size-xs);
  color: var(--color-gray-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__legal-link:hover {
  color: var(--color-white);
}

/* ============================================================
   ACCESSIBILITÉ
   ============================================================ */

.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;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ============================================================
   ANIMATIONS SCROLL
   ============================================================ */

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-delay="1"] { transition-delay: 100ms; }
[data-reveal-delay="2"] { transition-delay: 200ms; }
[data-reveal-delay="3"] { transition-delay: 300ms; }
[data-reveal-delay="4"] { transition-delay: 400ms; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  html { scroll-behavior: auto; }
}

/* ============================================================
   RESPONSIVE — BREAKPOINTS
   ============================================================ */

.histoire__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .histoire__grid { gap: var(--space-10); }
}

@media (max-width: 768px) {
  .histoire__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: var(--space-5);
  }

  .section { padding-block: var(--space-16); }

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

  .header__nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    flex-direction: column;
    align-items: flex-start;
    background-color: var(--color-primary);
    padding: var(--space-20) var(--space-8) var(--space-8);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-overlay);
    overflow-y: auto;
  }

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

  .header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    width: 100%;
  }

  .header__nav-link {
    font-size: var(--font-size-lg);
    display: block;
    padding-block: var(--space-3);
    width: 100%;
  }

  .header__toggle {
    display: flex;
    position: relative;
    z-index: calc(var(--z-overlay) + 1);
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

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

@media (max-width: 480px) {
  :root {
    --container-padding: var(--space-4);
  }
  .section { padding-block: var(--space-12); }
}