/* =============================================
   EARTHBUCKS — Shared Frontend Stylesheet
   ebx_frontend.css
   ============================================= */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;700;900&family=DM+Sans:wght@300;400;500;600&family=DM+Mono:wght@400;500&display=swap');

/* --- CSS Variables --- */
:root {
  /* Core Palette */
  --clr-earth:       #1a1a12;   /* near-black with warmth */
  --clr-forest:      #2d4a2d;   /* deep forest green */
  --clr-moss:        #4e7a4e;   /* mid green */
  --clr-sage:        #8aab74;   /* light sage */
  --clr-amber:       #c97c2a;   /* warm amber accent */
  --clr-honey:       #e8a84c;   /* lighter amber */
  --clr-parchment:   #f5f0e8;   /* warm off-white bg */
  --clr-paper:       #ece7dc;   /* slightly darker parchment */
  --clr-ink:         #1e1e14;   /* primary text */
  --clr-ink-muted:   #4a4a38;   /* secondary text */
  --clr-ink-light:   #7a7a62;   /* tertiary / placeholder */

  /* Semantic */
  --clr-bg:          var(--clr-parchment);
  --clr-surface:     var(--clr-paper);
  --clr-border:      #d4cec2;
  --clr-accent:      var(--clr-amber);
  --clr-accent-alt:  var(--clr-moss);

  /* Typography */
  --font-display:    'Playfair Display', Georgia, serif;
  --font-body:       'DM Sans', sans-serif;
  --font-mono:       'DM Mono', monospace;

  /* Spacing Scale */
  --sp-xs:   4px;
  --sp-sm:   8px;
  --sp-md:   16px;
  --sp-lg:   24px;
  --sp-xl:   40px;
  --sp-2xl:  64px;
  --sp-3xl:  96px;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 64px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(26,26,18,0.12);
  --shadow-md:  0 4px 16px rgba(26,26,18,0.12);
  --shadow-lg:  0 8px 32px rgba(26,26,18,0.16);
  --shadow-ink: 4px 4px 0px var(--clr-earth);

  /* Transitions */
  --transition: 200ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background-color: var(--clr-bg);
  color: var(--clr-ink);
  line-height: 1.6;
  min-height: 100vh;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.2;
  color: var(--clr-earth);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 900; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); font-weight: 700; }
h4 { font-size: 1.1rem; font-weight: 700; }

p { margin-bottom: var(--sp-md); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--clr-forest);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}
a:hover { color: var(--clr-amber); }

strong { font-weight: 600; }
em { font-style: italic; }

.mono {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

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

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-lg); }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .container { padding: 0 var(--sp-md); }
}

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.gap-sm { gap: var(--sp-sm); }
.gap-md { gap: var(--sp-md); }
.gap-lg { gap: var(--sp-lg); }

.section { padding: var(--sp-2xl) 0; }
.section-sm { padding: var(--sp-xl) 0; }

/* --- Navigation --- */
.ebx-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--clr-forest);
  border-bottom: 3px solid var(--clr-amber);
  display: flex;
  align-items: center;
}

.ebx-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ebx-nav__logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.4rem;
  color: var(--clr-parchment);
  text-decoration: none;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.ebx-nav__logo span.accent {
  color: var(--clr-honey);
}

.ebx-nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-xl);
  list-style: none;
}

.ebx-nav__links a {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(245,240,232,0.75);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color var(--transition);
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}

.ebx-nav__links a:hover,
.ebx-nav__links a.active {
  color: var(--clr-honey);
  border-bottom-color: var(--clr-honey);
}

.ebx-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 10px 22px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--clr-amber);
  color: var(--clr-earth);
  border-color: var(--clr-amber);
}
.btn-primary:hover {
  background: var(--clr-honey);
  border-color: var(--clr-honey);
  color: var(--clr-earth);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--clr-parchment);
  border-color: rgba(245,240,232,0.4);
}
.btn-outline:hover {
  border-color: var(--clr-honey);
  color: var(--clr-honey);
}

.btn-forest {
  background: var(--clr-forest);
  color: var(--clr-parchment);
  border-color: var(--clr-forest);
}
.btn-forest:hover {
  background: var(--clr-moss);
  border-color: var(--clr-moss);
  color: white;
}

.btn-ghost {
  background: transparent;
  color: var(--clr-ink-muted);
  border-color: var(--clr-border);
}
.btn-ghost:hover {
  background: var(--clr-surface);
  color: var(--clr-ink);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
}

/* --- Cards --- */
.card {
  background: white;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--sp-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-flat {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--sp-lg);
}

.card-bold {
  background: var(--clr-forest);
  color: var(--clr-parchment);
  border-radius: var(--radius-md);
  padding: var(--sp-lg);
  border: none;
}

/* --- Tags / Badges --- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 2px;
}

.tag-forest  { background: rgba(45,74,45,0.12); color: var(--clr-forest); }
.tag-amber   { background: rgba(201,124,42,0.15); color: var(--clr-amber); }
.tag-sage    { background: rgba(138,171,116,0.2); color: #3d6b2a; }
.tag-earth   { background: var(--clr-earth); color: var(--clr-parchment); }
.tag-neutral { background: var(--clr-surface); color: var(--clr-ink-muted); border: 1px solid var(--clr-border); }

/* --- Progress Bar --- */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--clr-border);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: var(--clr-moss);
  border-radius: 4px;
  transition: width 0.6s ease;
}

.progress-bar__fill--amber { background: var(--clr-amber); }
.progress-bar__fill--sage  { background: var(--clr-sage); }

/* --- Stat Block --- */
.stat-block {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-block__value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
  color: var(--clr-earth);
}

.stat-block__value--accent { color: var(--clr-amber); }
.stat-block__value--forest { color: var(--clr-forest); }

.stat-block__label {
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--clr-ink-light);
}

/* --- Dividers --- */
.divider {
  width: 100%;
  height: 1px;
  background: var(--clr-border);
  margin: var(--sp-lg) 0;
}

.divider-bold {
  width: 60px;
  height: 4px;
  background: var(--clr-amber);
  border-radius: 2px;
  margin: var(--sp-md) 0;
}

/* --- Section Headers --- */
.section-header {
  margin-bottom: var(--sp-xl);
}

.section-header__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-amber);
  margin-bottom: var(--sp-sm);
}

.section-header__title {
  margin-bottom: var(--sp-sm);
}

.section-header__subtitle {
  font-size: 1rem;
  color: var(--clr-ink-muted);
  max-width: 520px;
  line-height: 1.65;
}

/* --- Footer --- */
.ebx-footer {
  background: var(--clr-earth);
  color: rgba(245,240,232,0.7);
  padding: var(--sp-2xl) 0 var(--sp-xl);
  margin-top: var(--sp-3xl);
  font-size: 0.875rem;
}

.ebx-footer a {
  color: rgba(245,240,232,0.7);
  text-decoration: none;
}
.ebx-footer a:hover { color: var(--clr-honey); }

.ebx-footer__logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--clr-parchment);
  margin-bottom: var(--sp-sm);
}

.ebx-footer__tagline {
  font-size: 0.8rem;
  color: rgba(245,240,232,0.45);
  margin-bottom: var(--sp-xl);
}

.ebx-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-xl);
  padding-bottom: var(--sp-xl);
  border-bottom: 1px solid rgba(245,240,232,0.1);
  margin-bottom: var(--sp-lg);
}

@media (max-width: 768px) {
  .ebx-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-lg);
  }
}

.ebx-footer__col h4 {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(245,240,232,0.4);
  margin-bottom: var(--sp-md);
}

.ebx-footer__col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.ebx-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: rgba(245,240,232,0.3);
}

/* --- Alerts / Notices --- */
.alert {
  padding: var(--sp-md) var(--sp-lg);
  border-radius: var(--radius-sm);
  border-left: 4px solid;
  font-size: 0.9rem;
  margin-bottom: var(--sp-md);
}

.alert-info    { background: rgba(78,122,78,0.1); border-color: var(--clr-moss); color: var(--clr-forest); }
.alert-warning { background: rgba(201,124,42,0.1); border-color: var(--clr-amber); color: #7a4a10; }
.alert-success { background: rgba(138,171,116,0.2); border-color: var(--clr-sage); color: #3d5c2a; }

/* --- Loading State --- */
.skeleton {
  background: linear-gradient(90deg, var(--clr-border) 25%, var(--clr-surface) 50%, var(--clr-border) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.4s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* --- Utility Classes --- */
.text-center  { text-align: center; }
.text-right   { text-align: right; }
.text-sm      { font-size: 0.875rem; }
.text-xs      { font-size: 0.75rem; }
.text-muted   { color: var(--clr-ink-muted); }
.text-light   { color: var(--clr-ink-light); }
.text-amber   { color: var(--clr-amber); }
.text-forest  { color: var(--clr-forest); }
.text-parchment { color: var(--clr-parchment); }

.fw-bold   { font-weight: 700; }
.fw-medium { font-weight: 500; }

.mt-sm { margin-top: var(--sp-sm); }
.mt-md { margin-top: var(--sp-md); }
.mt-lg { margin-top: var(--sp-lg); }
.mt-xl { margin-top: var(--sp-xl); }
.mb-sm { margin-bottom: var(--sp-sm); }
.mb-md { margin-bottom: var(--sp-md); }
.mb-lg { margin-bottom: var(--sp-lg); }
.mb-xl { margin-bottom: var(--sp-xl); }

.hidden  { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ── EBX Token Chip ── */
.ebx-token {
  background: var(--clr-surface);
  border-radius: var(--radius-sm);
  padding: var(--sp-sm) var(--sp-md);
  margin-bottom: var(--sp-xs);
}
.ebx-token__index  { color: var(--clr-ink-light); margin-bottom: 2px; }
.ebx-token__title  { font-weight: 600; font-size: 0.9rem; }
.ebx-token__org    { margin-top: 2px; }
.ebx-token__amount { margin-top: 4px; color: var(--clr-amber); }

/* ── Credit Badge ── */
.ebx-credit-badge {
  display: inline-flex;
  cursor: pointer;
  transition: transform 0.2s;
}
.ebx-credit-badge:hover { transform: scale(1.1); }

/* ── Initiative Card ── */
.ebx-init-card { transition: box-shadow var(--transition), transform var(--transition); }
.ebx-init-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

/* ── Opinion Card ── */
.ebx-opinion { margin-bottom: var(--sp-md); }

/* EBX Home Mark (fixed top-left on inner pages) */
.ebx-home-mark {
  position: fixed;
  top: 12px;
  left: 16px;
  z-index: 200;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 900;
  color: var(--clr-parchment);
  opacity: 0.85;
  text-decoration: none;
  letter-spacing: 0.02em;
  line-height: 1;
  pointer-events: auto;
  /* Dark pill — readable on both light and dark page backgrounds */
  background: rgba(15, 26, 20, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 5px 10px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
  transition: opacity 0.15s, background 0.15s;
}
.ebx-home-mark:hover {
  opacity: 1;
  background: rgba(15, 26, 20, 0.95);
  color: var(--clr-parchment);
}