/* ============ TRAME · Composants v2 ============ */

/* ---- HEADER ---- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 60;
  padding: var(--sp-4) var(--gut);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--dur-med) var(--ease-soft), border-color var(--dur-med) var(--ease-soft);
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.brand-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--text);
  letter-spacing: -0.04em;
  line-height: 1;
  display: inline-flex;
  align-items: baseline;
  transition: color var(--dur-fast) var(--ease-soft);
}
.brand-logo:hover { color: var(--lime); }
.brand-logo .dot { color: var(--lime); }

.nav {
  display: flex;
  gap: clamp(1.25rem, 0.5rem + 2vw, 2.75rem);
  align-items: center;
}
.nav a {
  font-family: var(--font-text);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-dim);
  padding: 6px 0;
  letter-spacing: 0.01em;
  transition: color var(--dur-fast) var(--ease-soft);
  position: relative;
}
.nav a:hover, .nav a.active { color: var(--text); }
.nav a.active::before {
  content: "";
  position: absolute;
  left: -12px; top: 50%;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--lime);
  transform: translateY(-50%);
  box-shadow: 0 0 12px var(--lime-glow);
}

/* ---- NAV DROPDOWN ---- */
.nav-item--dropdown { position: relative; }
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: 0;
  padding: 6px 0;
  font-family: var(--font-text);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-dim);
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: color var(--dur-fast) var(--ease-soft);
}
.nav-toggle:hover, .nav-toggle[aria-expanded="true"] { color: var(--text); }
.nav-caret {
  width: 12px; height: 12px;
  transition: transform var(--dur-fast) var(--ease-soft);
}
.nav-toggle[aria-expanded="true"] .nav-caret,
.nav-item--dropdown:hover .nav-caret { transform: rotate(180deg); }

.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: -14px;
  min-width: 260px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--br-lg);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  z-index: 100;
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.55);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--dur-fast) var(--ease-soft),
              visibility var(--dur-fast) var(--ease-soft),
              transform var(--dur-fast) var(--ease-soft);
}
.nav-item--dropdown:hover .nav-dropdown,
.nav-item--dropdown:focus-within .nav-dropdown,
.nav-toggle[aria-expanded="true"] + .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown a {
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--text);
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: background var(--dur-fast) var(--ease-soft),
              color var(--dur-fast) var(--ease-soft);
}
.nav-dropdown a:hover { background: var(--bg-soft); color: var(--lime); }
.nav-dropdown a::before { display: none !important; }

.header-cta { display: inline-flex; align-items: center; gap: 10px; }

.burger {
  display: none;
  width: 40px; height: 40px;
  position: relative;
}
.burger span {
  position: absolute;
  left: 8px; right: 8px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--dur-fast) var(--ease-soft), opacity var(--dur-fast) var(--ease-soft), top var(--dur-fast) var(--ease-soft);
}
.burger span:nth-child(1) { top: 16px; }
.burger span:nth-child(2) { top: 22px; }
.burger.open span:nth-child(1) { top: 19px; transform: rotate(45deg); }
.burger.open span:nth-child(2) { top: 19px; transform: rotate(-45deg); }

@media (max-width: 820px) {
  .nav { display: none; }
  .burger { display: block; }
}

/* ---- MOBILE NAV ---- */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 55;
  background: var(--bg);
  padding: 84px 24px calc(env(safe-area-inset-bottom, 0px) + 32px);
  opacity: 0;
  visibility: hidden;
  overflow-y: auto;
  transition: opacity var(--dur-med) var(--ease-soft), visibility var(--dur-med) var(--ease-soft);
}
.mobile-nav.open { opacity: 1; visibility: visible; }
.mobile-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.mobile-nav li {
  border-bottom: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
}
.mobile-nav li:last-child {
  border-bottom: 0;
  margin-top: 20px;
  padding-top: 8px;
}
.mobile-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 4px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.mobile-nav a::after {
  content: "→";
  font-size: 1.1rem;
  color: color-mix(in srgb, var(--text) 35%, transparent);
  transition: transform var(--dur-fast) var(--ease-soft), color var(--dur-fast) var(--ease-soft);
}
.mobile-nav a:hover::after,
.mobile-nav a:active::after {
  transform: translateX(4px);
  color: var(--accent);
}
.mobile-nav .mn-cta {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 15px 22px !important;
  background: var(--accent) !important;
  color: #fff !important;
  font-family: var(--font-text) !important;
  font-size: 0.95rem !important;
  font-weight: 600 !important;
  letter-spacing: 0.01em !important;
  border-radius: 999px !important;
  gap: 10px;
  box-shadow: 0 10px 30px -12px color-mix(in srgb, var(--accent) 55%, transparent);
}
.mobile-nav .mn-cta::after {
  content: none !important;
}
.mobile-nav .mn-cta svg {
  transition: transform var(--dur-fast) var(--ease-soft);
}
.mobile-nav .mn-cta:hover svg,
.mobile-nav .mn-cta:active svg {
  transform: translateX(3px);
}

.mobile-nav-group { display: flex; flex-direction: column; gap: var(--sp-3); }
.mobile-nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: none;
  border: 0;
  padding: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-2xl);
  letter-spacing: -0.02em;
  color: var(--text);
  cursor: pointer;
  text-align: left;
}
.mobile-nav-toggle svg {
  width: 20px; height: 20px;
  transition: transform var(--dur-fast) var(--ease-soft);
}
.mobile-nav-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.mobile-nav-sub {
  list-style: none !important;
  padding: 0 0 0 var(--sp-5) !important;
  margin: 0 !important;
  display: none !important;
  flex-direction: column !important;
  gap: var(--sp-3) !important;
  border-left: 2px solid var(--line);
}
.mobile-nav-toggle[aria-expanded="true"] + .mobile-nav-sub {
  display: flex !important;
}
.mobile-nav-sub a {
  font-family: var(--font-text);
  font-size: var(--fs-lg);
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: 0;
}
.mobile-nav-sub a:hover { color: var(--lime); }

/* ---- BOUTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 28px;
  font-family: var(--font-text);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--br-pill);
  transition: background var(--dur-fast) var(--ease-soft), color var(--dur-fast) var(--ease-soft), transform var(--dur-fast) var(--ease-soft), border-color var(--dur-fast) var(--ease-soft), box-shadow var(--dur-med) var(--ease-soft);
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

.btn-primary {
  background: var(--lime);
  color: var(--bg);
  box-shadow: 0 0 0 rgba(196, 245, 66, 0);
}
.btn-primary:hover {
  background: var(--lime-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 32px var(--lime-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn-ghost:hover { background: var(--bg-elev); border-color: var(--text-dim); color: var(--text); }

.btn-dark {
  background: var(--bg-elev);
  color: var(--text);
  border-color: var(--line);
}
.btn-dark:hover { background: var(--bg-soft); border-color: var(--line-strong); }

.btn-icon { padding: 15px 22px; }

.btn .arrow {
  width: 14px; height: 14px;
  transition: transform var(--dur-med) var(--ease-out);
}
.btn:hover .arrow { transform: translateX(4px); }

/* ---- FLOATING BUTTON ---- */
.float-cta {
  position: fixed;
  bottom: var(--sp-6);
  right: var(--sp-6);
  z-index: 50;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--lime);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 12px 40px var(--lime-glow), 0 2px 8px rgba(0, 0, 0, 0.4);
  transition: transform var(--dur-med) var(--ease-out), background var(--dur-fast) var(--ease-soft);
}
.float-cta:hover { transform: scale(1.08) rotate(-6deg); background: var(--lime-hover); }
.float-cta svg { width: 26px; height: 26px; }
.float-cta::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid var(--lime);
  opacity: 0.4;
  animation: pulse 2.4s var(--ease-soft) infinite;
}
@keyframes pulse {
  0%   { transform: scale(1);   opacity: 0.4; }
  100% { transform: scale(1.35); opacity: 0; }
}
@media (max-width: 480px) {
  .float-cta { width: 54px; height: 54px; bottom: var(--sp-4); right: var(--sp-4); }
}

/* ---- FOOTER ---- */
.site-footer {
  padding: var(--sp-20) 0 var(--sp-8);
  border-top: 1px solid var(--line);
  background: var(--bg);
}
.footer-mega {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 1.5rem + 8vw, 9rem);
  line-height: 0.9;
  letter-spacing: -0.045em;
  color: var(--text);
  margin: 0 0 var(--sp-12);
  overflow: hidden;
}
.footer-mega .accent { color: var(--lime); }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-8);
  margin-bottom: var(--sp-12);
  padding-top: var(--sp-8);
  border-top: 1px solid var(--line);
}
.footer-brand h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-2xl);
  margin-bottom: var(--sp-3);
  letter-spacing: -0.03em;
}
.footer-brand h3 .dot { color: var(--lime); }
.footer-brand p {
  color: var(--text-muted);
  font-size: var(--fs-sm);
  max-width: 42ch;
  line-height: 1.55;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: var(--sp-4);
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--sp-3); }
.footer-col a, .footer-col li { color: var(--text-dim); font-size: var(--fs-sm); transition: color var(--dur-fast) var(--ease-soft); }
.footer-col a:hover { color: var(--lime); }

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: var(--sp-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-4);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  letter-spacing: 0.02em;
}
.footer-bottom a { color: var(--text-dim); transition: color var(--dur-fast) var(--ease-soft); }
.footer-bottom a:hover { color: var(--lime); }

@media (max-width: 820px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-8); }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ---- REVEAL ---- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: none; }

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

/* ============ THEME TOGGLE (clair / sombre) ============ */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  margin-right: var(--sp-3);
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.theme-toggle:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}
.theme-toggle svg {
  width: 18px;
  height: 18px;
  position: absolute;
  transition: opacity 0.25s ease, transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
:root .theme-toggle .icon-sun { opacity: 0; transform: rotate(-90deg) scale(0.6); }
:root .theme-toggle .icon-moon { opacity: 1; transform: rotate(0) scale(1); }
:root[data-theme="light"] .theme-toggle .icon-sun { opacity: 1; transform: rotate(0) scale(1); }
:root[data-theme="light"] .theme-toggle .icon-moon { opacity: 0; transform: rotate(90deg) scale(0.6); }

/* Contrastes en mode clair pour les éléments qui posent question */
:root[data-theme="light"] .btn-primary { color: #FFFFFF; }
:root[data-theme="light"] .btn-primary:hover { color: #FFFFFF; }

@media (max-width: 640px) {
  .theme-toggle { width: 36px; height: 36px; margin-right: var(--sp-2); }
  .theme-toggle svg { width: 16px; height: 16px; }
}