/* ============================================================
   Trump $1 Coin — Official Commemorative Stylesheet
   ============================================================ */

/* --- Custom Properties --- */
:root {
  --ivory: #f7f3eb;
  --ivory-dark: #ede7db;
  --paper: #faf8f4;
  --navy: #0c1a2e;
  --navy-mid: #1a3050;
  --presidential-blue: #2a4a72;
  --bronze: #9a7b4f;
  --gold: #b8963e;
  --gold-light: #d4b56a;
  --gray-warm: #8a8278;
  --gray-muted: #6b6560;
  --red-accent: #8b2332;
  --white: #ffffff;
  --black: #0a0a0a;

  --font-serif: "Georgia", "Times New Roman", "Palatino Linotype", "Book Antiqua", serif;
  --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;

  --header-height: 64px;
  --max-width: 1280px;
  --section-padding: clamp(3rem, 8vw, 6rem);
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--navy);
  background-color: var(--ivory);
  background-image:
    url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
  background-attachment: fixed;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* --- Typography Utilities --- */
.section-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--navy);
}

.section-heading--small {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.section-rule {
  width: 48px;
  height: 1px;
  background: var(--bronze);
  margin: 1rem 0 1.75rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  white-space: nowrap;
}

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

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--navy-mid);
  border-color: var(--navy-mid);
}

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

.btn--secondary:hover,
.btn--secondary:focus-visible {
  background: var(--navy);
  color: var(--ivory);
}

.btn--large {
  padding: 1rem 2.5rem;
  font-size: 0.8rem;
}

.btn--copy {
  background: var(--bronze);
  color: var(--white);
  border: 1px solid var(--bronze);
  padding: 0.75rem 1.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  border-radius: 2px;
  flex-shrink: 0;
}

.btn--copy:hover,
.btn--copy:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
}

.btn--copy.copied {
  background: var(--navy);
  border-color: var(--navy);
}

.btn:focus-visible,
.nav-link:focus-visible,
.header-brand:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(247, 243, 235, 0.94);
  border-bottom: 1px solid rgba(154, 123, 79, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 1px 12px rgba(12, 26, 46, 0.08);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 2rem);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.header-logo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.header-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--navy);
  white-space: nowrap;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.5vw, 1.25rem);
}

.nav-link {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-muted);
  transition: color var(--transition);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--navy);
}

.nav-link--buy {
  color: var(--navy);
  border: 1px solid var(--navy);
  padding: 0.45rem 0.85rem;
  border-radius: 2px;
}

.nav-link--buy:hover,
.nav-link--buy:focus-visible {
  background: var(--navy);
  color: var(--ivory);
}

.nav-link--x {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.nav-x-icon {
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--navy);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Hero --- */
.hero {
  padding-top: calc(var(--header-height) + 2rem);
  padding-bottom: 0;
  background: var(--paper);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    linear-gradient(135deg, rgba(12, 26, 46, 0.03) 0%, transparent 50%),
    linear-gradient(to bottom, var(--ivory-dark) 0%, var(--paper) 100%);
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4rem) clamp(1.5rem, 4vw, 3rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  position: relative;
}

.hero-content {
  max-width: 540px;
}

.hero-eyebrow {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bronze);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--navy);
  margin-bottom: 0.5rem;
}

.hero-denomination {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 400;
  line-height: 1;
  color: var(--bronze);
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero-narrative {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  line-height: 1.65;
  color: var(--gray-muted);
  margin-bottom: 2rem;
  max-width: 420px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-coin-frame {
  position: relative;
  width: min(420px, 90vw);
  aspect-ratio: 1;
}

.hero-coin-ring {
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  border: 1px solid rgba(154, 123, 79, 0.35);
  box-shadow:
    inset 0 0 0 4px rgba(154, 123, 79, 0.08),
    0 8px 32px rgba(12, 26, 46, 0.12);
}

.hero-coin-ring::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  border: 1px dashed rgba(154, 123, 79, 0.2);
}

.hero-coin-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 50%;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 12px 24px rgba(12, 26, 46, 0.18));
  transition: transform 0.6s ease;
}

.hero-coin-frame:hover .hero-coin-img {
  transform: scale(1.02);
}

.hero-footer-line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 1.75rem clamp(1rem, 3vw, 2rem);
  border-top: 1px solid rgba(154, 123, 79, 0.2);
  background: var(--ivory-dark);
}

.hero-rule {
  flex: 1;
  max-width: 120px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--bronze), transparent);
}

.hero-tagline {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-warm);
  text-align: center;
  white-space: nowrap;
}

/* --- Banner Panel --- */
.banner-panel {
  background: var(--navy);
  padding: 0;
  overflow: hidden;
}

.banner-panel-inner {
  max-width: 100%;
  margin: 0 auto;
}

.banner-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* --- Sections Base --- */
.section {
  padding: var(--section-padding) clamp(1.5rem, 4vw, 3rem);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* --- The 2026 Coin --- */
.section--coin {
  background: var(--paper);
  border-top: 1px solid rgba(154, 123, 79, 0.15);
  border-bottom: 1px solid rgba(154, 123, 79, 0.15);
}

.section-inner--split {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.coin-year {
  font-family: var(--font-serif);
  font-size: clamp(4rem, 12vw, 9rem);
  font-weight: 400;
  line-height: 0.85;
  color: rgba(12, 26, 46, 0.08);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  user-select: none;
}

.coin-editorial p {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.75;
  color: var(--navy-mid);
  margin-bottom: 1rem;
}

.coin-editorial p:last-child {
  margin-bottom: 0;
}

.coin-meta-rail {
  border-left: 1px solid rgba(154, 123, 79, 0.3);
  padding-left: clamp(1rem, 2vw, 2rem);
  min-width: 160px;
}

.meta-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.meta-item dt {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-warm);
  margin-bottom: 0.25rem;
}

.meta-item dd {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--navy);
}

/* --- Story --- */
.section--story {
  background: var(--ivory);
}

.section-inner--editorial {
  display: grid;
  grid-template-columns: 180px 1fr 320px;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.story-col--body p {
  font-family: var(--font-serif);
  font-size: clamp(0.95rem, 1.4vw, 1.1rem);
  line-height: 1.75;
  color: var(--navy-mid);
  margin-bottom: 1rem;
}

.story-lead {
  font-size: clamp(1.1rem, 1.8vw, 1.35rem) !important;
  color: var(--navy) !important;
}

.story-closing {
  font-style: italic;
  margin-top: 1.5rem;
}

.story-cta-line {
  margin-top: 2rem !important;
  color: var(--bronze) !important;
}

.story-denomination {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3rem) !important;
  color: var(--bronze) !important;
  line-height: 1 !important;
  margin: 0.5rem 0 !important;
}

.story-final {
  font-weight: 600;
  color: var(--navy) !important;
}

.story-coin-figure {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
}

.story-coin-figure img {
  width: 100%;
  border-radius: 50%;
  box-shadow: 0 8px 32px rgba(12, 26, 46, 0.12);
  border: 1px solid rgba(154, 123, 79, 0.2);
}

.story-caption {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-warm);
  text-align: center;
  margin-top: 1rem;
}

/* --- Denomination --- */
.section--denomination {
  background: var(--navy);
  padding: clamp(4rem, 10vw, 8rem) clamp(1.5rem, 4vw, 3rem);
  position: relative;
  overflow: hidden;
}

.section--denomination::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(184, 150, 62, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(184, 150, 62, 0.04) 0%, transparent 60%);
  pointer-events: none;
}

.denomination-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.denomination-edge {
  height: 12px;
  max-width: 600px;
  margin: 0 auto;
  background: repeating-linear-gradient(
    90deg,
    var(--gold) 0px,
    var(--gold) 2px,
    transparent 2px,
    transparent 6px
  );
  opacity: 0.35;
}

.denom-edge--top {
  margin-bottom: 2.5rem;
}

.denom-edge--bottom {
  margin-top: 2.5rem;
}

.denomination-mark {
  font-family: var(--font-serif);
  font-size: clamp(6rem, 20vw, 14rem);
  font-weight: 400;
  line-height: 0.9;
  color: var(--gold-light);
  letter-spacing: -0.03em;
  text-shadow: 0 2px 40px rgba(184, 150, 62, 0.2);
}

.denomination-phrase {
  font-size: clamp(0.7rem, 1.5vw, 0.85rem);
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(247, 243, 235, 0.55);
  line-height: 2;
  margin-top: 1.5rem;
}

/* --- Onchain --- */
.section--onchain {
  background: var(--paper);
}

.section-inner--onchain {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.onchain-lead {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  line-height: 1.65;
  color: var(--navy-mid);
  margin-bottom: 2rem;
}

.onchain-facts {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid rgba(154, 123, 79, 0.25);
}

.onchain-facts li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(154, 123, 79, 0.15);
}

.fact-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-warm);
}

.fact-value {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--navy);
}

.onchain-plate {
  position: relative;
  width: min(320px, 80%);
  margin: 0 auto;
  aspect-ratio: 1;
}

.onchain-plate img {
  width: 100%;
  border-radius: 50%;
  opacity: 0.85;
  filter: grayscale(20%);
}

.onchain-plate-overlay {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(154, 123, 79, 0.3);
  box-shadow: inset 0 0 40px rgba(12, 26, 46, 0.15);
  pointer-events: none;
}

/* --- Contract --- */
.section--contract {
  background: var(--ivory-dark);
  border-top: 1px solid rgba(154, 123, 79, 0.2);
  border-bottom: 1px solid rgba(154, 123, 79, 0.2);
}

.section-inner--contract {
  max-width: 720px;
}

.contract-notice {
  font-size: 0.85rem;
  color: var(--gray-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
  font-style: italic;
}

.contract-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-warm);
  margin-bottom: 0.75rem;
}

.contract-input-group {
  display: flex;
  gap: 0.75rem;
  align-items: stretch;
  flex-wrap: wrap;
}

.contract-address {
  flex: 1;
  min-width: 0;
  font-family: "Courier New", Courier, monospace;
  font-size: clamp(0.85rem, 2vw, 1rem);
  padding: 0.85rem 1.25rem;
  background: var(--white);
  border: 1px solid rgba(154, 123, 79, 0.35);
  color: var(--navy);
  word-break: break-all;
  border-radius: 2px;
  line-height: 1.5;
}

.copy-feedback {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bronze);
  margin-top: 0.75rem;
  min-height: 1.2em;
}

/* --- Artwork Gallery --- */
.section--artwork {
  background: var(--paper);
}

.artwork-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  margin-top: 1rem;
}

.artwork-plate--banner .artwork-frame {
  border: 1px solid rgba(154, 123, 79, 0.3);
  padding: clamp(0.5rem, 1.5vw, 1rem);
  background: var(--ivory);
  box-shadow: 0 4px 24px rgba(12, 26, 46, 0.06);
}

.artwork-plate--banner img {
  width: 100%;
}

.artwork-plate--coin {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  align-items: center;
}

.artwork-frame--coin {
  border: 1px solid rgba(154, 123, 79, 0.3);
  padding: 1rem;
  background: var(--navy);
  box-shadow: 0 4px 24px rgba(12, 26, 46, 0.1);
}

.artwork-frame--coin img {
  width: 100%;
  border-radius: 50%;
}

.artwork-caption {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.caption-label {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bronze);
}

.caption-title {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  color: var(--navy);
}

/* --- Acquire --- */
.section--acquire {
  background: var(--ivory);
}

.acquire-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 3vw, 2rem);
  margin: 2rem 0 2.5rem;
  counter-reset: none;
}

.acquire-step {
  border-top: 2px solid var(--navy);
  padding-top: 1.25rem;
}

.step-number {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  color: rgba(12, 26, 46, 0.12);
  line-height: 1;
  display: block;
  margin-bottom: 0.75rem;
}

.step-text {
  font-family: var(--font-serif);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  color: var(--navy-mid);
  line-height: 1.5;
}

.acquire-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* --- Final CTA --- */
.section--final-cta {
  background: linear-gradient(to bottom, var(--ivory-dark), var(--paper));
  padding: clamp(4rem, 10vw, 7rem) clamp(1.5rem, 4vw, 3rem);
  border-top: 1px solid rgba(154, 123, 79, 0.2);
}

.final-cta-inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.final-denomination {
  font-family: var(--font-serif);
  font-size: clamp(4rem, 15vw, 8rem);
  line-height: 0.9;
  color: var(--bronze);
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.final-title {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 1.25rem;
}

.final-phrase {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gray-warm);
  line-height: 2;
  margin-bottom: 2.5rem;
}

.final-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

/* --- Footer --- */
.site-footer {
  background: var(--navy);
  color: rgba(247, 243, 235, 0.7);
  padding: clamp(2rem, 4vw, 3rem) clamp(1.5rem, 4vw, 3rem);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  opacity: 0.85;
}

.footer-name {
  display: block;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--ivory);
  letter-spacing: 0.04em;
}

.footer-meta {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(247, 243, 235, 0.45);
  margin-top: 0.15rem;
}

.footer-nav {
  display: flex;
  gap: 1.5rem;
}

.footer-nav a {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(247, 243, 235, 0.55);
  transition: color var(--transition);
}

.footer-nav a:hover,
.footer-nav a:focus-visible {
  color: var(--gold-light);
}

.footer-disclaimer {
  font-size: 0.72rem;
  line-height: 1.65;
  color: rgba(247, 243, 235, 0.35);
  max-width: 720px;
  border-top: 1px solid rgba(247, 243, 235, 0.08);
  padding-top: 1.25rem;
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay {
  transition-delay: 0.15s;
}

.reveal--delay-2 {
  transition-delay: 0.3s;
}

/* --- Reduced Motion --- */
@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero-coin-img {
    transition: none;
  }
}

/* --- Tablet --- */
@media (max-width: 1024px) {
  .section-inner--split {
    grid-template-columns: 1fr;
  }

  .coin-year {
    writing-mode: horizontal-tb;
    transform: none;
    font-size: clamp(3rem, 10vw, 5rem);
    line-height: 1;
    margin-bottom: 0.5rem;
  }

  .coin-meta-rail {
    border-left: none;
    border-top: 1px solid rgba(154, 123, 79, 0.3);
    padding-left: 0;
    padding-top: 1.5rem;
  }

  .meta-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1.5rem 2.5rem;
  }

  .section-inner--editorial {
    grid-template-columns: 1fr 280px;
  }

  .story-col--lead {
    grid-column: 1 / -1;
  }

  .artwork-plate--coin {
    grid-template-columns: 220px 1fr;
  }

  .section-inner--onchain {
    grid-template-columns: 1fr;
  }

  .onchain-plate {
    width: min(260px, 60%);
  }
}

/* --- Mobile --- */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .header-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(247, 243, 235, 0.98);
    border-bottom: 1px solid rgba(154, 123, 79, 0.25);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem 1.5rem;
    gap: 0;
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }

  .header-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    padding: 0.85rem 0;
    border-bottom: 1px solid rgba(154, 123, 79, 0.12);
    font-size: 0.75rem;
  }

  .nav-link--buy {
    margin-top: 0.75rem;
    text-align: center;
    padding: 0.75rem;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .hero-visual {
    order: -1;
  }

  .hero-coin-frame {
    width: min(280px, 75vw);
    margin: 0 auto;
  }

  .hero-narrative {
    max-width: 100%;
  }

  .hero-tagline {
    white-space: normal;
    font-size: 0.58rem;
    letter-spacing: 0.15em;
  }

  .hero-rule {
    display: none;
  }

  .hero-footer-line {
    flex-direction: column;
    gap: 0.5rem;
  }

  .section-inner--editorial {
    grid-template-columns: 1fr;
  }

  .story-coin-figure {
    position: static;
    max-width: 260px;
    margin: 0 auto;
  }

  .story-col--visual {
    order: -1;
  }

  .acquire-steps {
    grid-template-columns: 1fr;
  }

  .artwork-plate--coin {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .artwork-frame--coin {
    max-width: 240px;
    margin: 0 auto;
  }

  .contract-input-group {
    flex-direction: column;
  }

  .btn--copy {
    width: 100%;
  }

  .denomination-mark {
    font-size: clamp(5rem, 22vw, 8rem);
  }

  .final-denomination {
    font-size: clamp(3.5rem, 18vw, 6rem);
  }

  .meta-list {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .header-title {
    font-size: 0.85rem;
  }

  .header-logo {
    width: 30px;
    height: 30px;
  }

  .hero-actions,
  .acquire-actions,
  .final-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn,
  .acquire-actions .btn,
  .final-actions .btn {
    width: 100%;
  }
}