/* ==========================================================================
   TOPUPCHIP.ID — Design System
   Token system → components → layout. Mobile-first. No external frameworks.
   ========================================================================== */

/* ---------- 1. DESIGN TOKENS ---------- */
:root {
  /* Color — full dark theme. Black as the base surface, layered just enough
     for depth (cards sit one step above page bg), gold/teal/ember accents
     carry the "chip" identity and read strongly against black. */
  --color-bg:          #060608;   /* page background */
  --color-bg-alt:      #0B0D12;   /* alternating section background */
  --color-bg-elevated: #121419;   /* cards, inputs, badges */
  --color-navy-deep:   #000000;   /* footer / deepest tier */
  --color-ink:         #10151F;   /* near-black, used for text sitting ON gold */
  --color-text:        #F4F5F9;   /* primary text */
  --color-text-muted:  #97A0B5;
  --color-gold:        #F5B301;
  --color-gold-dark:   #FFCE47;   /* brighter gold for hover/accent on dark bg */
  --color-teal:        #00D6C2;
  --color-ember:       #FF6A4D;
  --color-line:        rgba(255,255,255,0.12);
  --color-line-dark:   rgba(255,255,255,0.12);
  --color-text-on-dark: #C9D0DE;

  /* Typography */
  --font-display: 'Sora', 'Segoe UI', system-ui, sans-serif;
  --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  --fs-xs:   clamp(0.75rem, 0.72rem + 0.15vw, 0.8125rem);
  --fs-sm:   clamp(0.875rem, 0.84rem + 0.15vw, 0.9375rem);
  --fs-base: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --fs-lg:   clamp(1.125rem, 1.06rem + 0.3vw, 1.3125rem);
  --fs-xl:   clamp(1.375rem, 1.25rem + 0.6vw, 1.75rem);
  --fs-2xl:  clamp(1.75rem, 1.5rem + 1.2vw, 2.5rem);
  --fs-3xl:  clamp(2.25rem, 1.85rem + 2vw, 3.5rem);

  /* Spacing (8px base scale) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 760px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 999px;

  /* Motion */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 150ms;
  --dur-base: 250ms;

  /* Elevation — dark UI needs a light hairline highlight more than a dark
     drop shadow, since a black shadow barely reads on a black page. */
  --shadow-sm: 0 1px 0 rgba(255,255,255,0.04) inset, 0 2px 8px rgba(0,0,0,0.5);
  --shadow-md: 0 1px 0 rgba(255,255,255,0.06) inset, 0 12px 28px rgba(0,0,0,0.55);
  --shadow-lg: 0 1px 0 rgba(255,255,255,0.06) inset, 0 20px 48px rgba(0,0,0,0.6);

  --header-h: 68px;
}

html { color-scheme: dark; }

/* ---------- 2. RESET ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body, h1, h2, h3, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button, select, input { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.55;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; letter-spacing: -0.01em; }
h1 { font-size: var(--fs-3xl); font-weight: 800; }
h2 { font-size: var(--fs-2xl); font-weight: 700; }
h3 { font-size: var(--fs-lg); font-weight: 700; }

.mono { font-family: var(--font-mono); font-weight: 600; }

:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-gold);
  color: var(--color-ink);
  padding: var(--space-3) var(--space-4);
  z-index: 200;
  font-weight: 700;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---------- 3. LAYOUT UTILITIES ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: var(--space-8); }
.section--alt { background: var(--color-bg-alt); }
.section--dark {
  background: var(--color-navy-deep);
  color: var(--color-text-on-dark);
}
.section--dark h2, .section--dark h3 { color: #fff; }

.section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.section__head--center { flex-direction: column; align-items: center; text-align: center; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gold-dark);
  margin-bottom: var(--space-2);
}
.eyebrow--light { color: var(--color-gold); }

.link-more {
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-teal);
  white-space: nowrap;
}

.text-accent { color: var(--color-gold-dark); }

/* ---------- 4. BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border-radius: var(--radius-full);
  font-weight: 700;
  padding: var(--space-3) var(--space-5);
  font-size: var(--fs-sm);
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }
.btn--primary {
  background: var(--color-gold);
  color: var(--color-ink);
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { background: var(--color-gold-dark); box-shadow: var(--shadow-md); }
.btn--secondary {
  background: var(--color-bg-elevated);
  color: var(--color-text);
  border: 1.5px solid var(--color-line);
  width: 100%;
}
.btn--secondary:hover { border-color: var(--color-gold); color: var(--color-gold); }
.btn--ghost {
  background: transparent;
  border: 1.5px solid var(--color-line);
  color: var(--color-text);
}
.btn--ghost:hover { border-color: var(--color-text); }
.btn--lg { padding: var(--space-4) var(--space-6); font-size: var(--fs-base); width: 100%; }
.btn--sm { padding: var(--space-2) var(--space-4); font-size: var(--fs-xs); }

/* ---------- 5. HEADER ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease);
  /* NOTE: backdrop-filter/filter deliberately NOT applied here.
     Either would turn .site-header into a containing block for
     position:fixed descendants (like the mobile nav drawer),
     breaking its full-screen positioning. The blur lives on
     ::before instead so the header element itself stays "clean". */
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(6,6,8,0.86);
  backdrop-filter: blur(10px);
}
.site-header.is-scrolled {
  border-color: var(--color-line);
  box-shadow: var(--shadow-sm);
}
.header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: var(--space-4);
}

.logo { display: flex; align-items: center; gap: var(--space-2); }
.logo__mark {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--color-gold);
  border: 3px dashed rgba(0,0,0,0.35);
  flex-shrink: 0;
}
.logo__text { font-family: var(--font-display); font-weight: 800; font-size: var(--fs-base); letter-spacing: -0.02em; color: var(--color-text); }
.logo__dot { color: var(--color-gold); }
.logo--footer .logo__text { color: #fff; }

.main-nav__list { display: none; }
@media (min-width: 900px) {
  .main-nav__list { display: flex; gap: var(--space-6); }
  .main-nav__list a { font-weight: 600; font-size: var(--fs-sm); }
  .main-nav__list a:hover { color: var(--color-gold); }
}

.header__actions { display: flex; align-items: center; gap: var(--space-3); }
.header__status-link { display: none; }
@media (min-width: 1100px) { .header__status-link { display: inline-flex; } }

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}
.nav-toggle span { width: 22px; height: 2px; background: var(--color-text); border-radius: 2px; transition: transform var(--dur-base), opacity var(--dur-base); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (min-width: 900px) { .nav-toggle { display: none; } }

@media (max-width: 899px) {
  .main-nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: var(--color-bg);
    transform: translateX(100%);
    transition: transform var(--dur-base) var(--ease);
    overflow-y: auto;
    padding: var(--space-6) var(--space-5);
  }
  .main-nav.is-open { transform: translateX(0); }
  .main-nav__list { display: flex; flex-direction: column; gap: var(--space-2); }
  .main-nav__list a { display: block; padding: var(--space-4) 0; font-size: var(--fs-lg); font-weight: 700; border-bottom: 1px solid var(--color-line); }
}

/* ---------- 6. HERO ---------- */
.hero { padding-block: var(--space-8) var(--space-7); }
.hero__grid {
  display: grid;
  gap: var(--space-7);
}
@media (min-width: 960px) {
  .hero__grid { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
}

.hero__desc { color: var(--color-text-muted); font-size: var(--fs-lg); margin-block: var(--space-4) var(--space-6); max-width: 46ch; }

.quick-order {
  display: grid;
  gap: var(--space-3);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
@media (min-width: 640px) {
  .quick-order { grid-template-columns: 1fr 1fr; }
  .quick-order__submit { grid-column: 1 / -1; }
}
.quick-order__field { display: flex; flex-direction: column; gap: var(--space-1); }
.quick-order__field label { font-size: var(--fs-xs); font-weight: 700; color: var(--color-text-muted); }
.quick-order__field select,
.quick-order__field input {
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--fs-base);
}
.quick-order__field select:focus,
.quick-order__field input:focus { border-color: var(--color-gold); }
.quick-order__field input::placeholder { color: var(--color-text-muted); }

.trust-row { display: flex; flex-wrap: wrap; gap: var(--space-5); margin-top: var(--space-6); font-size: var(--fs-xs); color: var(--color-text-muted); }
.trust-row__num { display: block; font-family: var(--font-mono); font-size: var(--fs-lg); font-weight: 700; color: var(--color-text); }

/* Hero banner: reserved-space slot for a promo/campaign image per landing page.
   Swap the <img src> per page (Higgs Domino / Royal Dream / etc.); aspect-ratio
   keeps the space reserved before the image loads, so there's no layout shift. */
.hero__banner {
  margin-top: var(--space-7);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1200 / 360;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
}
.hero__banner img { width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 640px) {
  .hero__banner { aspect-ratio: 4 / 3; border-radius: var(--radius-md); }
}

/* Hero visual: CSS-only chip stack (no image request) */
.hero__visual { display: flex; justify-content: center; }
.chip-stack { position: relative; width: 220px; height: 220px; }
.chip-stack__coin {
  position: absolute;
  left: 50%;
  border-radius: 50%;
  transform: translateX(-50%);
  border: 6px dashed rgba(0,0,0,0.2);
}
.chip-stack__coin--1 { width: 220px; height: 220px; top: 0; background: var(--color-gold); }
.chip-stack__coin--2 { width: 180px; height: 180px; top: 26px; background: var(--color-teal); border-color: rgba(0,0,0,0.15); }
.chip-stack__coin--3 { width: 130px; height: 130px; top: 60px; background: var(--color-bg-elevated); border-color: rgba(255,255,255,0.2); }

/* ---------- 7. TOKEN CARD (signature component) ---------- */
.token-scroll {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  padding-bottom: var(--space-3);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.token-scroll::-webkit-scrollbar { height: 6px; }
.token-scroll::-webkit-scrollbar-thumb { background: var(--color-line); border-radius: var(--radius-full); }

@media (min-width: 900px) {
  .token-scroll { display: grid; grid-template-columns: repeat(4, 1fr); overflow: visible; }
}

.token-card {
  position: relative;
  flex: 0 0 210px;
  scroll-snap-align: start;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-4) var(--space-4);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur-base) var(--ease), transform var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}
.token-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--color-gold); }

/* die-cut notch: mimics a torn ticket edge */
.token-card::before,
.token-card::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 18px; height: 18px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  border-radius: 50%;
  transform: translateY(-50%);
}
.section:not(.section--alt) .token-card::before,
.section:not(.section--alt) .token-card::after { background: var(--color-bg); }
.token-card::before { left: -10px; }
.token-card::after { right: -10px; }

.token-card__icon { margin-inline: auto; border-radius: var(--radius-sm); }
.token-card__title { margin-top: var(--space-3); font-size: var(--fs-base); }
.token-card__price { font-size: var(--fs-sm); color: var(--color-text-muted); margin-block: var(--space-2) var(--space-4); }

.badge {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  color: #fff;
}
.badge--ember { background: var(--color-ember); }
.badge--teal { background: var(--color-teal); }

/* ---------- 8. CATEGORY ---------- */
.category-tabs { display: flex; gap: var(--space-2); overflow-x: auto; margin-bottom: var(--space-6); }
.category-tabs__btn {
  flex: 0 0 auto;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-line);
  font-size: var(--fs-sm);
  font-weight: 600;
  background: var(--color-bg-elevated);
  color: var(--color-text);
}
.category-tabs__btn.is-active { background: var(--color-gold); color: var(--color-ink); border-color: var(--color-gold); }

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
@media (min-width: 640px) { .category-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 960px) { .category-grid { grid-template-columns: repeat(6, 1fr); } }

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: center;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-text);
  transition: border-color var(--dur-fast), transform var(--dur-fast);
}
.category-card:hover { border-color: var(--color-gold); transform: translateY(-2px); }
.category-card[hidden] { display: none; }

/* ---------- 9. PAYMENT ---------- */
.payment-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
@media (min-width: 640px) { .payment-grid { grid-template-columns: repeat(4, 1fr); } }

.payment-badge {
  position: relative;
  background: var(--color-bg-elevated);
  border: 1.5px dashed var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-3);
  text-align: center;
}
.payment-badge__label { font-family: var(--font-mono); font-weight: 600; font-size: var(--fs-sm); color: var(--color-text); }

/* ---------- 10. FEATURE GRID ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}
@media (min-width: 640px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .feature-grid { grid-template-columns: repeat(4, 1fr); } }

.feature-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-line-dark);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}
.feature-card__icon { font-size: 1.75rem; margin-bottom: var(--space-3); }
.feature-card p { color: var(--color-text-on-dark); font-size: var(--fs-sm); margin-top: var(--space-2); }

/* ---------- 11. STEP LIST — domino pip markers (signature) ---------- */
.step-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  counter-reset: step;
}
@media (min-width: 720px) { .step-list { grid-template-columns: repeat(4, 1fr); } }

.step { text-align: center; }

.pip-marker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 4px;
  width: 52px;
  height: 52px;
  margin-inline: auto;
  margin-bottom: var(--space-4);
  padding: 6px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}
.pip-marker i { border-radius: 50%; background: transparent; }
.pip-marker i:nth-child(1) { grid-area: 1 / 1; }
.pip-marker i:nth-child(2) { grid-area: 2 / 2; }
.pip-marker i:nth-child(3) { grid-area: 3 / 3; }
/* domino pip patterns for 1–4 */
.pip-marker--1 i:nth-child(1) { grid-area: 2 / 2; background: var(--color-gold); }
.pip-marker--1 i:nth-child(2),
.pip-marker--1 i:nth-child(3) { background: transparent; }

.pip-marker--2 i:nth-child(1) { grid-area: 1 / 1; background: var(--color-gold); }
.pip-marker--2 i:nth-child(2) { grid-area: 3 / 3; background: var(--color-gold); }
.pip-marker--2 i:nth-child(3) { background: transparent; }

.pip-marker--3 i:nth-child(1) { grid-area: 1 / 1; background: var(--color-gold); }
.pip-marker--3 i:nth-child(2) { grid-area: 2 / 2; background: var(--color-gold); }
.pip-marker--3 i:nth-child(3) { grid-area: 3 / 3; background: var(--color-gold); }

.pip-marker--4 i:nth-child(1) { grid-area: 1 / 1; background: var(--color-gold); box-shadow: 34px 0 0 var(--color-gold); }
.pip-marker--4 i:nth-child(2) { grid-area: 3 / 1; background: var(--color-gold); box-shadow: 34px 0 0 var(--color-gold); }
.pip-marker--4 i:nth-child(3) { background: transparent; }

.step p { color: var(--color-text-muted); font-size: var(--fs-sm); margin-top: var(--space-2); }

/* ---------- 12. ACCORDION (FAQ) ---------- */
.accordion__item { border-bottom: 1px solid var(--color-line); }
.accordion__trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  text-align: left;
  font-weight: 700;
  font-size: var(--fs-base);
}
.accordion__icon {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--color-line);
  position: relative;
}
.accordion__icon::before, .accordion__icon::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  background: var(--color-text);
  transform: translate(-50%, -50%);
  transition: transform var(--dur-base) var(--ease);
}
.accordion__icon::before { width: 10px; height: 2px; }
.accordion__icon::after { width: 2px; height: 10px; }
.accordion__trigger[aria-expanded="true"] .accordion__icon::after { transform: translate(-50%, -50%) rotate(90deg) scaleY(0); }

.accordion__panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur-base) var(--ease);
}
.accordion__panel p { padding-bottom: var(--space-5); color: var(--color-text-muted); }

/* ---------- 13. REVIEW ---------- */
.review-scroll {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  padding-bottom: var(--space-3);
  scroll-snap-type: x mandatory;
}
@media (min-width: 900px) { .review-scroll { display: grid; grid-template-columns: repeat(3, 1fr); overflow: visible; } }

.review-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}
.review-card__stars { color: var(--color-gold); margin-bottom: var(--space-3); letter-spacing: 2px; }
.review-card__author { margin-top: var(--space-4); font-size: var(--fs-xs); font-weight: 700; color: var(--color-text-muted); }

/* ---------- 14. ARTICLES ---------- */
.article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}
@media (min-width: 640px) { .article-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .article-grid { grid-template-columns: repeat(4, 1fr); } }

.article-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--dur-base) var(--ease), transform var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}
.article-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--color-gold); }
.article-card img { aspect-ratio: 16/9; object-fit: cover; background: var(--color-bg-alt); }
.article-card__body { padding: var(--space-4); }
.article-card__body h3 { font-size: var(--fs-base); margin-block: var(--space-2); }
.article-card__body h3 a { color: var(--color-text); }
.article-card__body a:hover { color: var(--color-gold); }
.article-card__meta { font-size: var(--fs-xs); color: var(--color-text-muted); }

/* ---------- 15. FOOTER ---------- */
.site-footer {
  background: var(--color-navy-deep);
  color: var(--color-text-on-dark);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-line);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: var(--space-4);
  row-gap: var(--space-6);
  padding-bottom: var(--space-6);
}
.footer__brand { grid-column: 1 / -1; }
@media (min-width: 720px) {
  .site-footer { padding-top: var(--space-8); }
  .footer__grid { grid-template-columns: 1.4fr repeat(3, 1fr); padding-bottom: var(--space-7); }
  .footer__brand { grid-column: auto; }
}

.footer__brand p { margin-top: var(--space-3); font-size: var(--fs-sm); max-width: 32ch; }
.footer__social { display: flex; gap: var(--space-3); margin-top: var(--space-4); }
.footer__social a {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border: 1px solid var(--color-line-dark);
  border-radius: 50%;
  font-size: var(--fs-xs);
  font-weight: 700;
}
.footer__col h4 { color: #fff; font-size: var(--fs-sm); margin-bottom: var(--space-3); }
.footer__col li { margin-bottom: var(--space-2); font-size: var(--fs-sm); }
.footer__col a:hover { color: var(--color-gold); }

/* Collapse vertical rhythm a bit more on very small phones */
@media (max-width: 380px) {
  .footer__col li { margin-bottom: var(--space-1); }
}

.footer__bottom {
  border-top: 1px solid var(--color-line-dark);
  padding-block: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

/* ---------- 16. BACK TO TOP ---------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-5);
  right: var(--space-5);
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--color-gold);
  color: var(--color-ink);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-md);
  z-index: 90;
}
.back-to-top[hidden] { display: none; }