/* components.css — header, CA slot, buttons, cards, stats, footer.
   No color literals: every color comes from tokens.css custom properties. */

/* ---------- Sticky top stack (header + CA slot) ---------- */

.top-stack {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border-hairline);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-4);
  padding-block: var(--space-4);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.logo-mark {
  width: 32px;
  height: 32px;
  flex: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.nav-social {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ---------- Icon button (social / utility) — 48x48 minimum tap target ---------- */

.icon-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--tap-min);
  height: var(--tap-min);
  min-width: var(--tap-min);
  min-height: var(--tap-min);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  transition: transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

a.icon-btn:hover,
a.icon-btn:focus-visible {
  color: var(--text);
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px -12px var(--glow-medium);
}

.icon-btn[data-inert="true"] {
  color: var(--inert);
  border-style: dashed;
  border-color: var(--inert-border);
  cursor: not-allowed;
}

.icon-btn[data-inert="true"]:hover,
.icon-btn[data-inert="true"]:focus-visible {
  transform: none;
  box-shadow: none;
  color: var(--inert);
}

/* Tooltip for inert / informational controls */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  max-width: min(220px, calc(100vw - 2 * var(--space-5)));
  transform: translate(-50%, 4px);
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
  font-size: 0.75rem;
  line-height: 1.4;
  white-space: normal;
  text-align: center;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
  z-index: 20;
}

[data-tooltip]:hover::after,
[data-tooltip]:focus-visible::after {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* Edge-anchored variant: for controls that sit flush against the right
   edge of their row (e.g. the last social icon), centering the tooltip
   would push it past the viewport on narrow screens. */
[data-tooltip].tooltip-end::after {
  left: auto;
  right: -4px;
  transform: translateY(4px);
}

[data-tooltip].tooltip-end:hover::after,
[data-tooltip].tooltip-end:focus-visible::after {
  transform: translateY(0);
}

/* ---------- CA slot ---------- */

.ca-bar {
  padding-block: var(--space-4);
}

.ca-shell {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}

.ca-shell[data-state="absent"] {
  border-style: dashed;
  border-color: var(--inert-border);
  background: transparent;
}

.ca-shell[data-state="stated"] {
  border-color: var(--border-strong);
  box-shadow: 0 0 0 1px var(--glow-soft) inset;
}

.ca-label {
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-dim);
  flex: none;
}

.ca-value-wrap {
  flex: 1 1 260px;
  min-width: 0;
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.ca-value {
  font-size: clamp(0.95rem, 0.8rem + 0.6vw, 1.3rem);
  font-weight: 600;
  color: var(--text);
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
}

.ca-value::-webkit-scrollbar {
  display: none;
}

.ca-shell[data-state="absent"] .ca-value {
  color: var(--text-faint);
  font-weight: 500;
  font-style: normal;
}

.ca-copy {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--tap-min);
  min-width: var(--tap-min);
  padding-inline: var(--space-4);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface-raised);
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 600;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}

.ca-copy svg {
  width: 16px;
  height: 16px;
  flex: none;
}

.ca-copy:hover:not([disabled]),
.ca-copy:focus-visible:not([disabled]) {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px -14px var(--glow-medium);
  background: var(--surface-hover);
}

.ca-copy[disabled] {
  color: var(--inert);
  border-style: dashed;
  border-color: var(--inert-border);
  background: transparent;
  cursor: not-allowed;
}

.ca-copy[data-copied="true"] {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.ca-state {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--text-dim);
}

.ca-state-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--inert);
}

.ca-shell[data-state="stated"] .ca-state-dot {
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--glow-soft);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--tap-min);
  padding-inline: var(--space-6);
  border-radius: var(--radius-pill);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}

.btn svg {
  width: 16px;
  height: 16px;
}

.btn-primary {
  background: var(--text);
  color: var(--bg);
  border: 1px solid var(--text);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -14px var(--glow-strong);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--text-dim);
  transform: translateY(-2px);
  box-shadow: 0 12px 26px -16px var(--glow-medium);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

/* ---------- Hero ---------- */

.hero {
  padding-top: var(--space-9);
  padding-bottom: var(--space-8);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: var(--space-8);
}

.hero-inner {
  max-width: 760px;
  order: 2;
}

.hero .btn-row {
  margin-top: var(--space-6);
}

.hero-visual {
  position: relative;
  order: 1;
  isolation: isolate;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  width: min(72vw, 320px);
  margin-inline: auto;
  perspective: 800px;
}

.hero-visual-tilt {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform var(--dur-base) var(--ease-out);
  will-change: transform;
}

.hero-visual-mark {
  position: relative;
  width: 100%;
  height: 100%;
  animation: hero-float 7s var(--ease-in-out) infinite;
}

.hero-visual-glow {
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--glow-strong) 0%, transparent 70%);
  filter: blur(18px);
  z-index: -1;
  animation: hero-glow-pulse 4.5s var(--ease-in-out) infinite;
}

/* A tilted, fading grid floor beneath the mark — decorative depth cue,
   pure CSS (no canvas), masked so it fades out before it reaches the mark. */
.hero-visual-grid {
  position: absolute;
  z-index: -1;
  inset: auto -35% 2% -35%;
  height: 46%;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
  transform: perspective(360px) rotateX(62deg);
  -webkit-mask-image: linear-gradient(to top, black, transparent 85%);
  mask-image: linear-gradient(to top, black, transparent 85%);
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
    gap: var(--space-6);
  }

  .hero-inner {
    order: 1;
  }

  .hero-visual {
    order: 2;
    width: 100%;
    max-width: 420px;
  }
}

/* ---------- Numbered feature cards ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
}

.feature-card {
  position: relative;
  padding: var(--space-6);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.feature-card:first-child {
  border-left: none;
}

.feature-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.feature-index {
  font-size: 0.875rem;
  font-weight: 650;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

.feature-icon {
  width: 22px;
  height: 22px;
  color: var(--text-dim);
  flex: none;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.55;
}

.feature-tag {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-hairline);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--text-dim);
}

.feature-tag svg {
  width: 14px;
  height: 14px;
}

@media (max-width: 767px) {
  .feature-card {
    border-left: none;
    border-top: 1px solid var(--border);
  }

  .feature-card:first-child {
    border-top: none;
  }
}

/* ---------- Flat numbered list (undecorated, no card/icon) ---------- */

.flat-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6) var(--space-5);
  border-top: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: var(--space-6) 0 var(--space-2) var(--space-5);
}

@media (min-width: 800px) {
  .flat-list {
    grid-template-columns: repeat(4, 1fr);
  }
}

.flat-item {
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-hairline);
}

.flat-index {
  display: block;
  font-size: 0.8125rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  color: var(--accent-dim);
}

.flat-item h3 {
  margin-top: var(--space-2);
  font-size: 1rem;
}

.flat-item p {
  margin-top: var(--space-2);
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.55;
}

/* ---------- Live network stat grid ---------- */

.network-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.network-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--text-dim);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  position: relative;
}

.pulse-dot::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid var(--accent-dim);
  animation: pulse-ring 2.4s var(--ease-in-out) infinite;
}

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

@media (min-width: 640px) {
  .stat-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .stat-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: 0 18px 36px -22px var(--glow-medium);
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.stat-value {
  font-size: clamp(1.35rem, 1.1rem + 1vw, 1.9rem);
  font-weight: 650;
  color: var(--text);
  border-radius: var(--radius-sm);
  transition: background var(--dur-base) var(--ease-out);
}

.stat-value.is-ticking {
  animation: tick-flash var(--dur-slow) var(--ease-out);
}

.stat-value[data-empty="true"] {
  color: var(--text-faint);
}

.stat-value[data-loading="true"] {
  color: var(--text-faint);
  animation: loading-pulse 1.3s var(--ease-in-out) infinite alternate;
}

.stat-foot {
  font-size: 0.8125rem;
  color: var(--text-faint);
}

.stat-foot a {
  color: var(--text-dim);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--border-strong);
}

.stat-foot a:hover {
  color: var(--text);
}

/* ---------- CTA band ---------- */

.cta-band {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg-elevated) 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.cta-band .btn-row {
  margin-top: var(--space-3);
  justify-content: center;
}

.cta-band .ca-shell {
  width: 100%;
  max-width: 640px;
  margin-top: var(--space-6);
}

/* ---------- Toast notifications ---------- */

.toast-root {
  position: fixed;
  z-index: 300;
  left: 50%;
  bottom: var(--space-6);
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  pointer-events: none;
  width: min(calc(100vw - 2 * var(--space-5)), 360px);
}

@media (min-width: 640px) {
  .toast-root {
    left: auto;
    right: var(--space-6);
    bottom: var(--space-6);
    transform: none;
  }
}

.toast {
  pointer-events: auto;
  width: 100%;
  text-align: center;
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 600;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: 0 18px 40px -18px var(--shadow-elevated);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

@media (min-width: 640px) {
  .toast {
    text-align: left;
  }
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.toast.is-leaving {
  opacity: 0;
  transform: translateY(-8px);
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border-hairline);
  padding-block: var(--space-7);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.chain-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-pill);
  padding: var(--space-2) var(--space-4);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-fine {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-hairline);
  font-size: 0.8125rem;
  color: var(--text-faint);
}

.footer-fine a {
  color: var(--text-faint);
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
}

.footer-fine a:hover {
  color: var(--text-dim);
}