/* ============================================
   FEUX.NET — Global Stylesheet
   Version: 1.0.0
   Last updated: 2026-02-08
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Brand */
  --color-fire: #e85d26;
  --color-fire-hover: #d04f1c;
  --color-ember: #ff8c42;
  --color-ash: #2b2b2b;

  /* Light theme */
  --color-bg: #fafaf8;
  --color-surface: #ffffff;
  --color-surface-alt: #f3f0eb;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-border: #e0ddd7;
  --color-shadow: rgba(0, 0, 0, 0.06);
  --color-shadow-hover: rgba(0, 0, 0, 0.12);

  /* Typography */
  --font-body: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif;
  --font-heading: Georgia, "Times New Roman", serif;
  --line-height: 1.65;
  --line-height-tight: 1.2;

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Layout */
  --max-width: 1140px;
  --nav-height: 3.5rem;
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.2s ease;
}

/* --- Dark Theme --- */
[data-theme="dark"] {
  --color-bg: #121212;
  --color-surface: #1e1e1e;
  --color-surface-alt: #252525;
  --color-text: #e8e6e1;
  --color-text-muted: #9e9e9e;
  --color-border: #333;
  --color-shadow: rgba(0, 0, 0, 0.3);
  --color-shadow-hover: rgba(0, 0, 0, 0.5);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-fire);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover,
a:focus-visible {
  color: var(--color-fire-hover);
}

a:focus-visible {
  outline: 2px solid var(--color-fire);
  outline-offset: 2px;
  border-radius: 2px;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  font-weight: 700;
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.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;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  height: var(--nav-height);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: var(--space-md);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
}

.nav__logo:hover {
  color: var(--color-fire);
}

.nav__logo-icon {
  width: 28px;
  height: 28px;
  color: var(--color-fire);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.nav__links::-webkit-scrollbar {
  display: none;
}

.nav__link {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius);
  white-space: nowrap;
  transition: color var(--transition), background-color var(--transition);
  letter-spacing: 0.01em;
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-fire);
  background-color: var(--color-surface-alt);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-shrink: 0;
}

/* Theme toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}

.theme-toggle:hover {
  color: var(--color-fire);
  border-color: var(--color-fire);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.theme-toggle .icon-moon { display: block; }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

/* Mobile menu */
.nav__menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
}

.nav__menu-btn svg {
  width: 22px;
  height: 22px;
}

/* Lang switch */
.lang-switch {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.lang-switch:hover {
  border-color: var(--color-fire);
  color: var(--color-fire);
}

/* ============================================
   HERO
   ============================================ */

.hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  text-align: center;
}

.hero__tagline {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-fire);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: var(--space-lg);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto var(--space-xl);
}

.hero__search {
  max-width: 480px;
  margin: 0 auto;
  position: relative;
}

.hero__search-input {
  width: 100%;
  padding: 0.85rem 1.2rem 0.85rem 2.8rem;
  font-size: 0.95rem;
  font-family: var(--font-body);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  background-color: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.hero__search-input::placeholder {
  color: var(--color-text-muted);
}

.hero__search-input:focus {
  outline: none;
  border-color: var(--color-fire);
  box-shadow: 0 0 0 3px rgba(232, 93, 38, 0.12);
}

.hero__search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
  pointer-events: none;
}

/* ============================================
   PILLAR CARDS
   ============================================ */

.pillars {
  padding: var(--space-xl) 0 var(--space-3xl);
}

.pillars__title {
  font-size: 1.6rem;
  text-align: center;
  margin-bottom: var(--space-xl);
}

.pillars__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.pillar-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-xl) var(--space-lg);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.pillar-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px var(--color-shadow-hover);
  border-color: var(--color-fire);
}

.pillar-card:hover .pillar-card__icon {
  color: var(--color-fire);
}

.pillar-card__icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-md);
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.pillar-card__name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.pillar-card__desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  flex-grow: 1;
}

.pillar-card__count {
  display: inline-block;
  margin-top: var(--space-md);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-fire);
  letter-spacing: 0.02em;
}

/* ============================================
   RECENT ARTICLES
   ============================================ */

.recent {
  padding: var(--space-2xl) 0 var(--space-3xl);
  border-top: 1px solid var(--color-border);
}

.recent__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.recent__title {
  font-size: 1.6rem;
}

.recent__link {
  font-size: 0.88rem;
  font-weight: 500;
}

.recent__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.article-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--color-shadow-hover);
}

.article-card__img {
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--color-surface-alt);
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-card__img svg {
  width: 48px;
  height: 48px;
  color: var(--color-text-muted);
  opacity: 0.4;
}

.article-card__body {
  padding: var(--space-lg);
}

.article-card__category {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-fire);
  margin-bottom: var(--space-sm);
}

.article-card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1.35;
}

.article-card__title a {
  color: inherit;
  text-decoration: none;
}

.article-card__title a:hover {
  color: var(--color-fire);
}

.article-card__excerpt {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-bottom: var(--space-md);
}

.article-card__meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ============================================
   FAQ SECTION
   ============================================ */

.faq {
  padding: var(--space-2xl) 0 var(--space-3xl);
  border-top: 1px solid var(--color-border);
}

.faq__title {
  font-size: 1.6rem;
  text-align: center;
  margin-bottom: var(--space-xl);
}

.faq__list {
  max-width: 720px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid var(--color-border);
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--transition);
}

.faq__question:hover {
  color: var(--color-fire);
}

.faq__question svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--color-text-muted);
}

.faq__item[open] .faq__question svg {
  transform: rotate(45deg);
}

.faq__answer {
  padding: 0 0 var(--space-lg);
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 640px;
}

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

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0 var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-top: var(--space-md);
  max-width: 280px;
}

.footer__heading {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__links a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer__links a:hover {
  color: var(--color-fire);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  font-size: 0.78rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__bottom-links {
  display: flex;
  gap: var(--space-lg);
}

.footer__bottom-links a {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.footer__bottom-links a:hover {
  color: var(--color-fire);
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 900px) {
  .pillars__grid,
  .recent__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }
}

@media (max-width: 680px) {
  :root {
    --nav-height: 3.25rem;
  }

  .nav__links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-surface);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-lg);
    gap: var(--space-xs);
    z-index: 99;
    overflow-y: auto;
  }

  .nav__links.is-open {
    display: flex;
  }

  .nav__link {
    font-size: 1rem;
    padding: var(--space-md) var(--space-sm);
  }

  .nav__menu-btn {
    display: flex;
  }

  .lang-switch {
    display: none;
  }

  .nav__links .lang-switch--mobile {
    display: block;
    text-align: center;
    margin-top: var(--space-md);
  }

  .pillars__grid,
  .recent__grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: var(--space-2xl) 0 var(--space-xl);
  }

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

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

/* --- Print --- */
@media print {
  .site-header,
  .site-footer,
  .hero__search,
  .theme-toggle,
  .nav__menu-btn {
    display: none;
  }

  body {
    color: #000;
    background: #fff;
  }
}