@import url("fonts.css");

:root {
  --bg: #070d0e;
  --panel: #0a1111;
  --panel-raised: #0f1717;
  --ivory: #f3ecdc;
  --muted: #b5ae9e;
  --muted-dim: #7d7869;
  --brass: #a8894d;
  --brass-bright: #c7a35f;
  --jade: #96e1cc;
  --jade-dim: #5f8f81;
  --line: rgba(243, 236, 220, 0.14);
  --line-strong: rgba(243, 236, 220, 0.24);
  --shadow: rgba(0, 0, 0, 0.55);
  --radius-s: 4px;
  --radius-m: 10px;
  --radius-l: 18px;
  --font-serif: "Cormorant Garamond", "Iowan Old Style", "Times New Roman", Georgia, serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --container-max: 1360px;
  --header-h: 84px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ivory);
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

button {
  font-family: inherit;
  color: inherit;
}

.eyebrow,
.mono,
.label {
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 18px;
}

.label {
  font-size: 11px;
  color: var(--muted-dim);
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  margin: 0;
  color: var(--ivory);
}

p {
  margin: 0;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px;
}

@media (max-width: 720px) {
  .container {
    padding: 0 20px;
  }
}

/* ---------------------------------- utility ---------------------------------- */

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

.skip-link {
  position: fixed;
  top: -60px;
  left: 16px;
  z-index: 500;
  background: var(--jade);
  color: #06110d;
  padding: 12px 18px;
  border-radius: var(--radius-s);
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 16px;
}

.rule {
  border: none;
  border-top: 1px solid var(--line);
  margin: 0;
}

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

.btn {
  --btn-fg: var(--bg);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 14px 26px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  cursor: pointer;
  text-decoration: none;
  background: var(--brass);
  color: #1c1305;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  background: var(--brass-bright);
}

.btn:active {
  transform: translateY(1px);
}

.btn-ghost {
  background: transparent;
  color: var(--ivory);
  border-color: var(--line-strong);
}

.btn-ghost:hover {
  background: rgba(243, 236, 220, 0.06);
  border-color: var(--jade-dim);
}

.btn-text {
  background: none;
  border: none;
  padding: 0;
  color: var(--jade);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-text:hover {
  color: var(--jade-dim);
  text-decoration: underline;
}

.btn:disabled,
.btn-text:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn[data-busy="true"] {
  pointer-events: none;
  opacity: 0.7;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--jade);
  border: 1px solid rgba(150, 225, 204, 0.4);
  background: rgba(150, 225, 204, 0.08);
  border-radius: 999px;
  padding: 4px 12px;
}

/* ---------------------------------- header ---------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, rgba(7, 13, 14, 0.92), rgba(7, 13, 14, 0.72));
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ivory);
}

.wordmark svg {
  width: 26px;
  height: 26px;
  flex: none;
}

.wordmark span {
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.32em;
  padding-left: 2px;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.primary-nav a {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--muted);
  padding: 8px 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  color: var(--ivory);
  border-color: var(--brass);
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 20px;
}

.x-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  color: var(--ivory);
  text-decoration: none;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.x-link:hover {
  border-color: var(--jade);
  color: var(--jade);
}

.x-link svg {
  width: 15px;
  height: 15px;
}

.chain-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted-dim);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  cursor: pointer;
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 860px) {
  .primary-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    padding: 8px 20px 20px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
  }

  .primary-nav[data-open="true"] {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .primary-nav a {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .chain-tag {
    display: none;
  }
}

/* ---------------------------------- hero ---------------------------------- */

.hero {
  position: relative;
  padding: 64px 0 56px;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: minmax(300px, 460px) 1fr;
  gap: 32px;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(46px, 6vw, 76px);
  line-height: 1.03;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.hero-copy .support {
  margin-top: 22px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  margin-top: 32px;
}

.follow-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--ivory);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}

.follow-link:hover {
  color: var(--jade);
  border-color: var(--jade);
}

.follow-link svg {
  width: 13px;
  height: 13px;
}

.hero-stats {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  max-width: 360px;
}

.stat-value {
  font-family: var(--font-serif);
  font-variant-numeric: lining-nums proportional-nums;
  font-size: 52px;
  font-weight: 500;
  color: var(--ivory);
  line-height: 1;
  margin-top: 4px;
}

.stat-caption {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted-dim);
}

.stat-inline {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
}

.stat-inline strong {
  color: var(--jade);
  font-size: 15px;
  font-variant-numeric: lining-nums;
}

.advance-block {
  margin-top: 26px;
}

.advance-note {
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted-dim);
  font-family: var(--font-mono);
  line-height: 1.6;
}

/* ---------------------------------- pyramid scene ---------------------------------- */

.pyramid-scene-wrap {
  position: relative;
}

.pyramid-scene {
  position: relative;
  width: 100%;
  aspect-ratio: 1586 / 992;
  border-radius: var(--radius-l);
  overflow: hidden;
  background: #000;
  isolation: isolate;
}

.pyramid-scene img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 50%;
  will-change: transform;
}

.pyramid-scene .scene-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 32% 40%, rgba(7, 13, 14, 0) 45%, rgba(7, 13, 14, 0.55) 100%);
  pointer-events: none;
}

.hotspot-layer {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.hotspot {
  position: absolute;
  pointer-events: auto;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(243, 236, 220, 0.55);
  background: rgba(7, 13, 14, 0.72);
  color: var(--ivory);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  padding: 0;
}

.hotspot::before {
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  border: 1px solid rgba(243, 236, 220, 0.18);
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.hotspot:hover,
.hotspot:focus-visible {
  border-color: var(--jade);
  background: rgba(150, 225, 204, 0.16);
  transform: translate(-50%, -50%) scale(1.06);
}

.hotspot:hover::before,
.hotspot:focus-visible::before {
  opacity: 1;
  transform: scale(1.12);
}

.hotspot[aria-expanded="true"] {
  border-color: var(--jade);
  background: var(--jade);
  color: #06140f;
}

.hotspot .pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--jade);
  opacity: 0.6;
  animation: hotspot-pulse 2.6s ease-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .hotspot .pulse {
    animation: none;
    display: none;
  }
}

@keyframes hotspot-pulse {
  0% {
    transform: scale(1);
    opacity: 0.55;
  }
  100% {
    transform: scale(1.9);
    opacity: 0;
  }
}

.scene-instruction {
  margin-top: 18px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted-dim);
  text-transform: uppercase;
}

/* ---------------------------------- chamber panel (desktop) ---------------------------------- */

.chamber-panel {
  position: absolute;
  z-index: 2;
  right: 16px;
  bottom: 16px;
  width: min(340px, calc(100% - 32px));
  max-height: calc(100% - 32px);
  overflow-y: auto;
  background: rgba(10, 17, 17, 0.97);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  padding: 22px 22px 20px;
  box-shadow: 0 30px 60px var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.chamber-panel::-webkit-scrollbar {
  width: 6px;
}

.chamber-panel::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .chamber-panel {
    transition: opacity 0.01s linear;
  }
}

.chamber-panel[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.chamber-panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.chamber-panel .label {
  display: block;
  margin-bottom: 8px;
}

.chamber-panel h3 {
  font-size: 27px;
}

.chamber-panel-close {
  background: none;
  border: none;
  color: var(--muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex: none;
}

.chamber-panel-close:hover {
  color: var(--ivory);
  background: rgba(243, 236, 220, 0.08);
}

.chamber-panel-body {
  margin-top: 14px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

.chamber-panel-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.chamber-step-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  padding: 6px 4px;
}

.chamber-step-btn:hover {
  color: var(--jade);
}

.chamber-step-btn svg {
  width: 12px;
  height: 12px;
}

.chamber-cards {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 260px;
  overflow-y: auto;
  padding-right: 4px;
}

.chamber-cards::-webkit-scrollbar {
  width: 6px;
}

.chamber-cards::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 3px;
}

.inscription-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  padding: 12px 14px;
  background: rgba(243, 236, 220, 0.03);
}

.inscription-card p {
  font-size: 14.5px;
  color: var(--ivory);
  line-height: 1.5;
}

.inscription-card .card-foot {
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.preserve-toggle {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  border: 1px solid var(--line-strong);
  background: none;
  color: var(--muted);
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.preserve-toggle:hover:not(:disabled) {
  border-color: var(--jade);
  color: var(--jade);
}

.preserve-toggle[aria-pressed="true"] {
  background: var(--jade);
  border-color: var(--jade);
  color: #06140f;
}

.empty-note {
  font-size: 13.5px;
  color: var(--muted-dim);
  font-style: italic;
  padding: 6px 2px;
}

.fact-chip {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--muted-dim);
}

/* ---------------------------------- mobile sheet ---------------------------------- */

.sheet-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 8, 8, 0.72);
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.sheet-backdrop[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
}

.mobile-sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 301;
  background: var(--panel);
  border-top: 1px solid var(--line-strong);
  border-radius: 18px 18px 0 0;
  padding: 20px 20px calc(24px + env(safe-area-inset-bottom));
  max-height: 82vh;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform 0.24s ease;
  box-shadow: 0 -20px 50px var(--shadow);
}

.mobile-sheet[data-open="true"] {
  transform: translateY(0);
}

.sheet-grabber {
  width: 40px;
  height: 4px;
  border-radius: 2px;
  background: var(--line-strong);
  margin: 0 auto 16px;
}

/* ---------------------------------- ritual ---------------------------------- */

.ritual {
  padding: 96px 0;
  border-top: 1px solid var(--line);
}

.section-head {
  max-width: 620px;
  margin-bottom: 52px;
}

.section-head h2 {
  font-size: clamp(32px, 4vw, 44px);
}

.section-head p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.6;
}

.ritual-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.ritual-step {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 28px 26px;
  background: linear-gradient(180deg, rgba(243, 236, 220, 0.03), transparent);
}

.ritual-step .step-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--brass-bright);
  letter-spacing: 0.1em;
}

.ritual-step h3 {
  margin-top: 14px;
  font-size: 25px;
}

.ritual-step p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

@media (max-width: 860px) {
  .ritual-steps {
    grid-template-columns: 1fr;
  }
}

/* ---------------------------------- chronicle ---------------------------------- */

.chronicle {
  padding: 96px 0;
  border-top: 1px solid var(--line);
}

.chronicle-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
}

.chronicle-actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.chronicle-empty {
  margin-top: 20px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-m);
  padding: 40px;
  text-align: center;
  color: var(--muted);
}

.chronicle-empty p:first-child {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--ivory);
  margin-bottom: 8px;
}

.dynasty-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.dynasty-card {
  text-align: left;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius-m);
  padding: 20px;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.dynasty-card:hover,
.dynasty-card:focus-visible {
  border-color: var(--jade-dim);
  transform: translateY(-2px);
}

.dynasty-card.is-current {
  border-color: var(--brass);
}

.dynasty-card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.dynasty-card-head .num {
  font-family: var(--font-serif);
  font-size: 30px;
}

.dynasty-card-stats {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.dynasty-card-stats .held {
  color: var(--jade);
}

.dynasty-card-stats .flooded {
  color: #d98f78;
}

.chronicle-compare {
  margin-top: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 24px;
  background: var(--panel);
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 18px;
}

@media (max-width: 720px) {
  .compare-grid {
    grid-template-columns: 1fr;
  }
}

.compare-col h4 {
  font-size: 20px;
}

.compare-list {
  margin-top: 12px;
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
  color: var(--muted);
}

.compare-select {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

select.mono-select {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--panel-raised);
  color: var(--ivory);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  padding: 8px 10px;
}

/* ---------------------------------- faq / footer ---------------------------------- */

.faq {
  padding: 88px 0;
  border-top: 1px solid var(--line);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px 40px;
}

@media (max-width: 780px) {
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

.faq-item h3 {
  font-size: 19px;
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
  font-weight: 600;
  color: var(--ivory);
}

.faq-item p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 44px 0 48px;
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-tagline {
  color: var(--muted-dim);
  font-size: 13px;
  font-family: var(--font-mono);
  margin-top: 6px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 22px;
}

.footer-fine {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted-dim);
  font-size: 12px;
  font-family: var(--font-mono);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.token-meta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.copy-contract {
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 10px;
  cursor: pointer;
}

.copy-contract:hover {
  color: var(--jade);
  border-color: var(--jade);
}

/* ---------------------------------- dialog / toast ---------------------------------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 8, 8, 0.72);
  z-index: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
}

.modal-backdrop[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  width: min(460px, 100%);
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  padding: 28px;
  box-shadow: 0 30px 70px var(--shadow);
}

.modal h2 {
  font-size: 24px;
}

.modal p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

.modal-actions {
  margin-top: 24px;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.dawn-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: radial-gradient(ellipse at 50% 120%, #4a3313, #070d0e 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.dawn-overlay[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
}

.dawn-overlay p {
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 13px;
  color: var(--ivory);
}

.toast-stack {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 600;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(420px, 92vw);
  align-items: center;
}

.toast {
  width: 100%;
  background: var(--panel-raised);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-s);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--ivory);
  box-shadow: 0 12px 30px var(--shadow);
}

.toast.is-error {
  border-color: #c56650;
  color: #f3d7cd;
}

.toast.is-success {
  border-color: var(--jade-dim);
}

.file-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* ---------------------------------- responsive scene ---------------------------------- */

@media (max-width: 980px) {
  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 560px;
  }

  .chamber-panel {
    display: none;
  }
}

@media (max-width: 640px) {
  .hero {
    padding: 40px 0 40px;
  }

  .hero-copy h1 {
    font-size: 44px;
  }

  .hero-stats {
    max-width: none;
  }

  .pyramid-scene {
    aspect-ratio: 4 / 5;
    border-radius: var(--radius-m);
  }
}