/* ══════════════════════════════════════════════════════
   global.css — Styles fondamentaux partagés par toutes
   les pages : reset, body, typographie, layout helpers,
   boutons, navigation, footer, back-to-top, utilitaires.
   Dépend de variables.css (doit être chargé après).
   ══════════════════════════════════════════════════════ */

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

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

html:focus-within {
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(circle at top left, rgba(36, 111, 159, 0.08), transparent 28%),
    linear-gradient(180deg, #f8f7f4 0%, var(--color-bg) 100%);
  color: var(--color-dark);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.65;
  overflow-x: hidden;
}

body.body--nav-open {
  overflow: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

:focus-visible {
  outline: 3px solid rgba(36, 111, 159, 0.34);
  outline-offset: 3px;
}

section[id] {
  scroll-margin-top: calc(var(--nav-h) + 20px);
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 200;
  padding: 0.8rem 1.1rem;
  border-radius: 999px;
  background: var(--color-dark);
  color: var(--color-white);
  box-shadow: var(--shadow-card);
  transform: translateY(-140%);
  transition: transform var(--transition-base);
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* ─────────────────────────────────────────
   TYPOGRAPHY HELPERS
───────────────────────────────────────── */
.display {
  font-family: var(--font-title);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.title {
  font-family: var(--font-title);
  font-weight: 600;
  line-height: 1.2;
}

.overline {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ─────────────────────────────────────────
   LAYOUT HELPERS
───────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.section__header {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  max-width: 760px;
}

.section__header .overline {
  display: block;
  margin-bottom: 0.75rem;
}

.section__header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

.section__lede {
  max-width: 62ch;
  margin-top: 1rem;
  color: var(--color-mid);
  font-size: 0.98rem;
  line-height: 1.8;
}

/* ─────────────────────────────────────────
   ACCENT RULE
───────────────────────────────────────── */
.accent-rule {
  display: block;
  width: 72px;
  height: 3px;
  background: linear-gradient(to right, var(--color-accent), var(--color-accent-2), transparent);
  border-radius: 2px;
  margin-top: 1.25rem;
}

/* ─────────────────────────────────────────
   BUTTONS
───────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  border-radius: 999px;
  transition: background var(--transition-base),
              color var(--transition-base),
              box-shadow var(--transition-base),
              transform var(--transition-base);
}

.btn:active {
  transform: translateY(1px);
}

.btn:focus-visible,
.nav__link:focus-visible,
.nav__mobile-link:focus-visible,
.footer a:focus-visible,
.back-to-top:focus-visible,
.nav__burger:focus-visible {
  outline: 3px solid rgba(36, 111, 159, 0.34);
  outline-offset: 4px;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 10px 24px rgba(36, 111, 159, 0.22);
}

.btn--primary:hover {
  background: var(--color-accent-h);
  box-shadow: 0 6px 20px rgba(36, 111, 159, 0.32);
}

/* ─────────────────────────────────────────
   NAVIGATION
───────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-h);
  z-index: 100;
  transition: background var(--transition-base),
              box-shadow var(--transition-base),
              backdrop-filter var(--transition-base);
}

/* État transparent sur le hero */
.nav--transparent {
  background: transparent;
}

/* État scrollé */
.nav--scrolled {
  background: rgba(248, 246, 242, 0.92);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow: 0 1px 0 rgba(28, 26, 27, 0.06), 0 12px 32px rgba(28, 26, 27, 0.07);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 100%;
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  line-height: 1;
}

.nav__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 104px;
  height: 54px;
  flex-shrink: 0;
}

@media (min-width: 1024px) {
  .nav__logo-mark {
    width: 120px;
    height: 62px;
  }
}

.nav__logo-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: filter var(--transition-base);
}

.nav--transparent .nav__logo-image {
  filter: brightness(0) invert(1);
}


@media (max-width: 639px) {
  .nav__logo-mark {
    width: 88px;
    height: 46px;
  }
}

/* Liens desktop */
.nav__links {
  display: none;
  align-items: center;
  gap: 2.25rem;
}

@media (min-width: 768px) {
  .nav__links {
    display: flex;
    margin-left: auto;
  }
}

.nav__link {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-mid);
  position: relative;
  transition: color var(--transition-base);
}

.nav--transparent .nav__link {
  color: rgba(255,255,255,0.8);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
  transition: width 0.3s var(--ease-out);
}

.nav__link:hover {
  color: var(--color-dark);
}

.nav--transparent .nav__link:hover {
  color: var(--color-white);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__link--active {
  color: var(--color-dark);
}

.nav--transparent .nav__link--active {
  color: var(--color-white);
}

.nav--transparent .nav__link::after {
  background: rgba(255, 255, 255, 0.85);
}

/* CTA nav */
.nav__cta {
  display: none;
}

@media (min-width: 900px) {
  .nav__cta {
    display: inline-flex;
  }
}

@media (max-width: 767px) {
  .nav__burger {
    margin-left: auto;
  }
}

@media (max-width: 599px) {
  .nav__mobile-cta {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
}

/* Burger mobile */
.nav__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 4px;
}

@media (min-width: 768px) {
  .nav__burger {
    display: none;
  }
}

.nav__burger-bar {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: transform var(--transition-base),
              opacity var(--transition-base);
}

.nav--transparent .nav__burger-bar {
  background: var(--color-white);
}

/* Burger ouvert */
.nav__burger[aria-expanded="true"] .nav__burger-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav__burger[aria-expanded="true"] .nav__burger-bar:nth-child(2) {
  opacity: 0;
}
.nav__burger[aria-expanded="true"] .nav__burger-bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Menu mobile drawer */
.nav__mobile-menu {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  width: 100%;
  background: rgba(244, 242, 238, 0.98);
  padding: 1.5rem var(--gutter) 2rem;
  box-shadow: 0 18px 40px rgba(28, 26, 27, 0.12);
  transform: translateY(-110%);
  opacity: 0;
  transition: transform 0.4s var(--ease-out),
              opacity 0.3s var(--ease-out);
  z-index: 99;
}

.nav__mobile-menu[hidden] {
  display: none;
}

.nav__mobile-menu.is-open {
  transform: translateY(0);
  opacity: 1;
}

.nav__backdrop {
  position: fixed;
  inset: 0;
  background: rgba(12, 17, 23, 0.42);
  opacity: 0;
  transition: opacity 0.25s var(--ease-out);
  z-index: 98;
}

.nav__backdrop[hidden] {
  display: none;
}

.nav__backdrop.is-visible {
  opacity: 1;
}

.nav__mobile-links {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.nav__mobile-link {
  display: block;
  padding: 1rem 0;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-dark);
  border-bottom: 1px solid var(--color-surface);
  transition: color var(--transition-base),
              padding-left var(--transition-base);
}

.nav__mobile-link:hover {
  color: var(--color-accent);
  padding-left: 0.5rem;
}

.nav__mobile-link--active {
  color: var(--color-accent);
}

.nav__mobile-cta {
  margin-top: 1.5rem;
}

/* ─────────────────────────────────────────
   MENU MOBILE — animation d'entrée des liens
   Liens invisibles par défaut ; l'animation
   `navLinkIn` les fait apparaître en cascade
   dès que .is-open est posé sur le parent.
───────────────────────────────────────── */
.nav__mobile-links .nav__mobile-link,
.nav__mobile-menu .nav__mobile-cta {
  opacity: 0;
}

.nav__mobile-menu.is-open .nav__mobile-link,
.nav__mobile-menu.is-open .nav__mobile-cta {
  animation: navLinkIn 0.38s var(--ease-out) calc(var(--link-i, 0) * 55ms) both;
}

/* ─────────────────────────────────────────
   COULEURS DE FOND DES SECTIONS
   (sections sans fichier CSS dédié pour l'instant)
───────────────────────────────────────── */
#projets {
  background:
    radial-gradient(circle at top right, rgba(36, 111, 159, 0.12), transparent 24%),
    var(--color-surface);
}

#apropos {
  background: var(--color-bg);
}

#contact {
  background:
    radial-gradient(circle at top left, rgba(78, 146, 191, 0.22), transparent 20%),
    linear-gradient(180deg, #1f242a 0%, var(--color-dark) 100%);
  color: var(--color-bg);
}

/* ─────────────────────────────────────────
   FOOTER
───────────────────────────────────────── */
.footer {
  background: linear-gradient(180deg, #eceae6 0%, var(--color-bg) 100%);
  color: var(--color-mid);
  padding-block: 3rem 2rem;
  border-top: 1px solid rgba(28, 26, 27, 0.08);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (min-width: 640px) {
  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .footer__inner {
    grid-template-columns: minmax(320px, 1.35fr) minmax(150px, 0.7fr) minmax(180px, 0.85fr);
    gap: 3rem;
  }
}

.footer__logo {
  display: inline-block;
  line-height: 0;
}

.footer__logo-img {
  width: 120px;
  height: auto;
}


.footer__brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 34ch;
}

.footer__col h4 {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.1rem;
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer__col a {
  font-size: 0.875rem;
  color: var(--color-mid);
  transition: color var(--transition-base);
}

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

.footer__bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(28, 26, 27, 0.1);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  text-align: center;
  font-size: 0.78rem;
  color: var(--color-light);
}

@media (min-width: 640px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer__legal {
  display: flex;
  gap: 1.25rem;
}

.footer__legal a {
  font-size: 0.78rem;
  color: var(--color-light);
  transition: color var(--transition-base);
}

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

/* ─────────────────────────────────────────
   SCROLL-TO-TOP
───────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(36, 111, 159, 0.36);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity var(--transition-base),
              transform var(--transition-base),
              background var(--transition-base);
  z-index: 90;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-accent-h);
}

.back-to-top svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ─────────────────────────────────────────
   TOUCH FEEDBACK — appareils tactiles
   Remplace le hover par un retour visuel au tap.
───────────────────────────────────────── */
@media (hover: none) and (pointer: coarse) {
  .btn {
    -webkit-tap-highlight-color: transparent;
  }

  .btn:active {
    transform: scale(0.96);
  }

  .nav__mobile-link {
    -webkit-tap-highlight-color: rgba(36, 111, 159, 0.1);
  }
}

/* Back-to-top : pulsation pour attirer l'œil sur mobile */
@media (max-width: 767px) {
  .back-to-top.is-visible {
    animation: softPulse 3s ease-in-out 0.8s infinite;
  }
}

@media (prefers-reduced-motion: reduce) {
  html,
  html:focus-within {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}