/* =============================================================
   FARS2.org — shared stylesheet
   Linked on every page. header.js relies on the classes below
   for the header, nav, and newsletter modal it injects.
   ============================================================= */

/* ---------- Design tokens ---------- */
:root {
  /* Color palette — comfortable brown / white / dark orange */
  --cream:        #FBF6EF;  /* page background */
  --paper:        #FFFFFF;  /* card / surface background */
  --brown-deep:   #4A3526;  /* primary text */
  --brown-mid:    #8C6F56;  /* secondary text, borders */
  --brown-soft:   #EDE2D3;  /* hairlines, subtle fills */
  --orange-dark:  #C2541F;  /* primary accent, links, buttons */
  --orange-glow:  #E2884A;  /* lighter accent, hovers, helix */
  --charcoal:     #2A1D14;  /* near-black, footer / dark surfaces */

  /* Type */
  --font-display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body:     "Lora", Georgia, "Times New Roman", serif;
  --font-mono:     "IBM Plex Mono", "Courier New", monospace;

  /* Layout */
  --container-w: 1120px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 4px 16px rgba(74, 53, 38, 0.08);
}

/* ---------- Reset & base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--brown-deep);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--orange-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--brown-deep);
  margin: 0 0 0.5em;
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; }

button { font-family: inherit; }

:focus-visible {
  outline: 3px solid var(--orange-dark);
  outline-offset: 2px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange-dark);
  font-weight: 500;
  margin: 0 0 0.6em;
  display: block;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--orange-dark);
  color: var(--cream);
}
.btn-primary:hover { background: #a8451a; }

.btn-secondary {
  background: transparent;
  border-color: var(--brown-mid);
  color: var(--brown-deep);
}
.btn-secondary:hover { border-color: var(--orange-dark); color: var(--orange-dark); }

.btn-small { padding: 10px 18px; font-size: 14px; }

/* =============================================================
   Header & navigation (markup injected by header.js)
   ============================================================= */
.site-header {
  background: var(--cream);
  border-bottom: 1px solid var(--brown-soft);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--brown-deep);
}
.brand:hover { text-decoration: none; }

.brand-mark { width: 30px; height: 30px; flex-shrink: 0; }

.brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--brown-deep);
}
.brand-text-accent { color: var(--orange-dark); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  color: var(--brown-mid);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover { color: var(--brown-deep); text-decoration: none; }
.main-nav a.is-active {
  color: var(--brown-deep);
  border-bottom-color: var(--orange-dark);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--brown-deep);
  border-radius: 2px;
}

/* ---------- Newsletter modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(42, 29, 20, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 100;
}
.modal-overlay[hidden] { display: none; }

.modal {
  background: var(--paper);
  border-radius: var(--radius-lg);
  padding: 36px;
  max-width: 420px;
  width: 100%;
  position: relative;
  box-shadow: 0 20px 60px rgba(42, 29, 20, 0.3);
}

.modal h3 { font-size: 24px; margin-bottom: 0.4em; }
.modal p { color: var(--brown-mid); font-size: 15px; }

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: transparent;
  border: none;
  font-size: 24px;
  line-height: 1;
  color: var(--brown-mid);
  cursor: pointer;
  padding: 6px;
}
.modal-close:hover { color: var(--orange-dark); }

#newsletterForm {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}
#newsletterEmail {
  flex: 1;
  padding: 12px 14px;
  border: 1.5px solid var(--brown-soft);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 15px;
  background: var(--cream);
  color: var(--brown-deep);
}
#newsletterEmail:focus { border-color: var(--orange-dark); outline: none; }

.modal-note {
  margin-top: 14px;
  font-size: 14px;
  color: var(--orange-dark);
  font-weight: 600;
}

/* =============================================================
   Hero (homepage)
   ============================================================= */
.hero {
  padding: 64px 0 88px;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}

.hero-copy { animation: rise 0.8s ease both; }
.hero-visual { animation: rise 0.8s ease 0.15s both; }

.hero h1 {
  font-size: clamp(40px, 5.5vw, 64px);
  margin-bottom: 0.3em;
}

.hero-tagline {
  font-size: 19px;
  color: var(--brown-mid);
  max-width: 540px;
  margin-bottom: 1.6em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-visual { text-align: center; }
.hero-helix { max-width: 280px; margin: 0 auto; }
.hero-helix svg {
  width: 100%;
  height: auto;
  animation: float 6s ease-in-out infinite;
}

.helix-caption {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--brown-mid);
  max-width: 260px;
  margin: 16px auto 0;
  line-height: 1.5;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-helix svg { animation: none; }
  .hero-copy, .hero-visual { animation: none; }
}

/* =============================================================
   Content sections
   ============================================================= */
.section {
  padding: 72px 0;
  border-top: 1px solid var(--brown-soft);
}
.section:nth-of-type(odd) { background: var(--paper); }

.section-head {
  max-width: 640px;
  margin-bottom: 40px;
}
.section-head h2 { font-size: clamp(28px, 3.5vw, 36px); }
.section-head p { color: var(--brown-mid); font-size: 17px; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: var(--cream);
  border: 1px solid var(--brown-soft);
  border-radius: var(--radius-md);
  padding: 28px;
}

.card-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--orange-dark);
  margin-bottom: 0.6em;
  display: block;
}

.card h3 { font-size: 19px; margin-bottom: 0.4em; }
.card p { color: var(--brown-mid); font-size: 15.5px; margin-bottom: 0; }

.placeholder-note {
  font-size: 13px;
  color: var(--brown-mid);
  font-style: italic;
  opacity: 0.8;
}

.list-plain {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}
.list-plain li {
  padding-left: 28px;
  position: relative;
  color: var(--brown-mid);
}
.list-plain li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange-glow);
}
.list-plain strong { color: var(--brown-deep); }

.section-cta { margin-top: 32px; }

/* =============================================================
   Footer
   ============================================================= */
.site-footer {
  background: var(--charcoal);
  color: var(--brown-soft);
  padding: 44px 0;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.footer-inner a { color: var(--orange-glow); }
.footer-brand { font-family: var(--font-display); font-weight: 600; color: var(--cream); }
.footer-meta { font-size: 14px; color: var(--brown-mid); }
.footer-nav { display: flex; gap: 20px; font-size: 14px; }

/* =============================================================
   Page header (non-hero pages: blog, info)
   ============================================================= */
.page-header {
  padding: 56px 0 36px;
  border-bottom: 1px solid var(--brown-soft);
}
.page-header h1 { font-size: clamp(32px, 4.5vw, 44px); }
.page-header p { color: var(--brown-mid); font-size: 17px; max-width: 600px; margin: 0; }

/* =============================================================
   Blog listing
   ============================================================= */
.post-grid {
  display: grid;
  gap: 22px;
  padding: 48px 0 80px;
}

.post-card {
  display: block;
  background: var(--paper);
  border: 1px solid var(--brown-soft);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.post-card:hover {
  border-color: var(--orange-dark);
  transform: translateX(2px);
  text-decoration: none;
}
.post-date {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--orange-dark);
  margin-bottom: 0.5em;
  display: block;
}
.post-card h2 {
  font-size: 22px;
  margin-bottom: 0.4em;
  color: var(--brown-deep);
}
.post-card p {
  color: var(--brown-mid);
  font-size: 15.5px;
  margin: 0;
}

.empty-state, .error-state {
  padding: 60px 0;
  text-align: center;
  color: var(--brown-mid);
}
.error-state a { font-weight: 600; }

/* =============================================================
   Single article
   ============================================================= */
.article-wrap {
  padding: 48px 0 96px;
}
.article-back {
  font-family: var(--font-mono);
  font-size: 13px;
  display: inline-block;
  margin-bottom: 28px;
}
.article-head { max-width: 680px; margin: 0 auto 32px; }
.article-head h1 { font-size: clamp(30px, 4.5vw, 42px); }

.article-body {
  max-width: 680px;
  margin: 0 auto;
  font-size: 18px;
  line-height: 1.75;
}
.article-body h2 { font-size: 26px; margin-top: 1.4em; }
.article-body h3 { font-size: 21px; margin-top: 1.2em; }
.article-body h4 { font-size: 18px; margin-top: 1.1em; }
.article-body p { margin-bottom: 1.1em; }
.article-body ul.article-list { margin: 0 0 1.1em; padding-left: 1.4em; }
.article-body blockquote {
  border-left: 3px solid var(--orange-dark);
  margin: 1.6em 0;
  padding: 4px 0 4px 20px;
  color: var(--brown-mid);
  font-style: italic;
}

.loading-state {
  text-align: center;
  padding: 60px 0;
  color: var(--brown-mid);
  font-family: var(--font-mono);
  font-size: 14px;
}

/* =============================================================
   Responsive
   ============================================================= */
@media (max-width: 880px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 220px; margin: 0 auto; }
  .card-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--cream);
    border-bottom: 1px solid var(--brown-soft);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 8px 24px 18px;
    display: none;
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { width: 100%; padding: 10px 0; }
  .nav-toggle { display: flex; }
  .header-actions .btn-small.is-subscribe-desktop { display: none; }
}

@media (max-width: 560px) {
  .hero { padding: 40px 0 56px; }
  .section { padding: 52px 0; }
  #newsletterForm { flex-direction: column; }
}