/* ============================================================================
   brand-layer.css — Couche de marque erickilama.com
   Invariante sur toutes les pages. Ne doit contenir aucun hex hardcode.
   Spec: 01_BRAND_LAYER.md
   ============================================================================ */

/* ---------- RESET MINIMAL ---------- */

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

body {
  margin: 0;
  padding: 0;
  color: var(--color-text-primary);
  background: var(--color-background-primary);
}

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

/* ---------- LAYOUT CONTAINERS ---------- */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.container--narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

/* ---------- NAVIGATION ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-background-primary) 88%, transparent);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
  margin-bottom: 0;
}

.site-header.scrolled {
  border-bottom-color: var(--color-border-secondary);
}

.site-header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  text-decoration: none;
}
.wordmark-mark {
  color: var(--brand-flag, #00A8E8);
  font-size: 14px;
}

.main-nav {
  display: flex;
  gap: 0;
}

/* Nav items with dropdowns */
.nav-item {
  position: relative;
}

.nav-item > a {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 20px 11px;
  display: block;
  transition: color var(--transition-fast);
}

.nav-item > a:hover {
  color: var(--color-text-primary);
}

.nav-item.active > a {
  color: var(--color-text-primary);
  font-weight: var(--weight-medium);
}

/* Dropdown panel */
.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  background: var(--color-background-primary);
  border: 0.5px solid var(--color-border-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-3) 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-medium), visibility var(--transition-medium);
  z-index: 50;
}

.nav-item:hover .dropdown {
  opacity: 1;
  visibility: visible;
}

.dropdown-links {
  display: flex;
  flex-direction: column;
}

.dropdown-links a {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 8px var(--space-4);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.dropdown-links a:hover {
  background: var(--color-background-secondary);
  color: var(--color-text-primary);
}

/* Fallback for simple nav links (no dropdown) */
.main-nav > a {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 20px 11px;
  transition: color var(--transition-fast);
}

.main-nav > a:hover {
  color: var(--color-text-primary);
}

.main-nav > a.active {
  color: var(--color-text-primary);
  font-weight: var(--weight-medium);
}

.lang-switch {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--color-text-tertiary);
}

.lang-switch a {
  color: var(--color-text-tertiary);
  text-decoration: none;
}

.lang-switch a.active {
  color: var(--color-text-primary);
  font-weight: var(--weight-medium);
}

/* Mobile burger */
.burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.burger-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-primary);
  margin: 4px 0;
  transition: transform var(--transition-medium);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-background-primary);
  z-index: 100;
  padding: var(--space-6) var(--space-5);
  overflow-y: auto;
}

.mobile-menu.is-open { display: block; }

.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 99;
}

.mobile-nav-overlay.is-open { display: block; }

.mobile-menu .mobile-nav-item > a {
  display: block;
  font-family: var(--font-ui);
  font-size: 18px;
  color: var(--color-text-primary);
  text-decoration: none;
  padding: var(--space-3) 0;
  border-bottom: 0.5px solid var(--color-border-tertiary);
}

.mobile-menu .mobile-nav-item.active > a {
  color: var(--brand-primary);
  font-weight: var(--weight-medium);
}

/* Mobile accordion dropdowns */
.mobile-menu .mobile-dropdown {
  display: none;
  padding: 0 0 var(--space-3) var(--space-4);
}

.mobile-menu .mobile-nav-item.expanded .mobile-dropdown {
  display: block;
}

.mobile-menu .mobile-dropdown a {
  display: block;
  font-family: var(--font-ui);
  font-size: 15px;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-2) 0;
}

.mobile-menu .mobile-dropdown a:hover {
  color: var(--brand-primary);
}

@media (max-width: 760px) {
  .main-nav { display: none; }
  .burger { display: block; }
}

/* ---------- LINKS ---------- */

a {
  color: var(--brand-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--brand-primary-soft);
}

/* ---------- FOOTER ---------- */

.site-footer {
  margin-top: var(--space-9);
  padding: var(--space-7) 0 var(--space-5);
  border-top: 0.5px solid var(--color-border-tertiary);
  font-family: var(--font-ui);
}

.site-footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.site-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-5);
}

.site-footer-brand strong {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: var(--weight-medium);
  letter-spacing: 0.5px;
  display: block;
  margin-bottom: 8px;
  color: var(--color-text-primary);
}

.site-footer-brand p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.55;
  max-width: 320px;
  margin: 0;
}

.site-footer-col h4 {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-secondary);
  margin: 0 0 12px;
}

.site-footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer-col li {
  margin-bottom: 6px;
  font-size: 13px;
}

.site-footer-col a {
  color: var(--color-text-primary);
  text-decoration: none;
}

.site-footer-col a:hover {
  color: var(--brand-primary);
  text-decoration: underline;
}

.site-footer-baseline {
  padding-top: var(--space-4);
  border-top: 0.5px solid var(--color-border-tertiary);
  font-size: 12px;
  color: var(--color-text-tertiary);
}

.site-footer-baseline a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.site-footer-baseline a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  .site-footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }
}

/* ---------- SELECTION ---------- */

::selection {
  background: var(--color-background-brand-soft);
  color: var(--color-text-primary);
}

/* ---------- FOCUS VISIBLE (accessibilité clavier) ---------- */

:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
}

/* ---------- TICKER ---------- */

.ticker {
  background: var(--color-background-secondary);
  border-bottom: 1px solid var(--color-border-secondary);
  padding: 12px 0;
  overflow: hidden;
  white-space: nowrap;
}
.ticker-inner {
  font-family: var(--font-data);
  font-size: 12px;
  display: inline-block;
  animation: ticker-scroll 60s linear infinite;
}
.ticker-item { display: inline-block; margin: 0 32px; color: var(--color-text-secondary); letter-spacing: 0.04em; }
.ticker-item .symbol { color: var(--brand-primary); margin-right: 8px; }
.ticker-item .value  { color: var(--color-text-primary); margin-right: 6px; }
.ticker-item .delta-good     { color: var(--state-good); }
.ticker-item .delta-bad      { color: var(--state-bad); }
.ticker-item .delta-neutral  { color: var(--state-neutral); }
@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- SMOOTH SCROLL ---------- */

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}