/* =============================================================
   The Information Age — Design System
   NSCI 110 Creative Presentation | BSCS 1-B Group 6
   ============================================================= */

/* ── Design Tokens ──────────────────────────────────────────── */
:root {
  /* Colors (Dark Mode — Default) */
  --color-bg:             #0a0a0f;
  --color-surface:        #1a1a2e;
  --color-primary:        #00d4ff;
  --color-accent:         #ff006e;
  --color-success:        #00ff88;
  --color-text-primary:   #ffffff;
  --color-text-secondary: #a0a0b8;

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Animation */
  --duration-default: 300ms;
  --duration-reveal:  600ms;
  --duration-hover:   200ms;
  --easing:           cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Light Mode Overrides ───────────────────────────────────── */
.light {
  --color-bg:             #f0f4f8;
  --color-surface:        #ffffff;
  --color-text-primary:   #0a0a0f;
  --color-text-secondary: #4a4a6a;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  overflow-y: scroll;        /* keeps gutter space reserved so layout doesn't shift */
  scrollbar-gutter: stable;  /* explicit gutter reservation */
  scrollbar-width: none;     /* Firefox — hide track */
}

html::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Edge — hide track */
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  overflow-x: hidden;
  line-height: 1.6;
  transition:
    background-color var(--duration-default) var(--easing),
    color           var(--duration-default) var(--easing);
}

.network-banner {
  position: fixed;
  left: 50%;
  top: 0.75rem;
  transform: translateX(-50%);
  width: min(92vw, 46rem);
  border-radius: 0.6rem;
  border: 1px solid color-mix(in srgb, #ff9a4b 45%, transparent);
  background: color-mix(in srgb, #1a1a1a 90%, transparent);
  color: #ffd8b0;
  padding: 0.6rem 0.85rem;
  font-size: 0.88rem;
  text-align: center;
  z-index: 10020;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.34);
}

/* ── Typography ─────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  color: var(--color-text-primary);
}

code,
pre,
.font-mono {
  font-family: var(--font-mono);
}

/* ── Sections ───────────────────────────────────────────────── */
section {
  min-height: 100vh;
  padding: 4rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  isolation: isolate;
}

section + section {
  margin-top: 0;
  padding-top: 4rem;
}

section + section::before {
  content: none;
}

.section-transition {
  height: 0;
  margin: 0;
  pointer-events: none;
  position: relative;
  z-index: 1;
}

.section-transition::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1.15rem;
  height: clamp(1.8rem, 5vw, 2.8rem);
  background: linear-gradient(
    180deg,
    transparent 0%,
    color-mix(in srgb, var(--seam-from, #0a0a0f) 44%, transparent) 36%,
    color-mix(in srgb, var(--seam-to, #0a0a0f) 44%, transparent) 68%,
    transparent 100%
  );
  filter: blur(7px);
  opacity: 0.82;
}

.section-transition.t-hero-whatis {
  --seam-from: #0a0a0f;
  --seam-to: #090c14;
}

.section-transition.t-whatis-timeline {
  --seam-from: #090c14;
  --seam-to: #06131d;
}

.section-transition.t-timeline-impact {
  --seam-from: #06131d;
  --seam-to: #120714;
}

.section-transition.t-impact-challenges {
  --seam-from: #120714;
  --seam-to: #14070f;
}

.section-transition.t-challenges-future {
  --seam-from: #14070f;
  --seam-to: #04101c;
}

.section-transition.t-future-poll {
  --seam-from: #070711;
  --seam-to: #06131f;
}

.section-transition.t-poll-simulator {
  --seam-from: #05070d;
  --seam-to: #1b050f;
}

.section-transition.t-simulator-credits {
  --seam-from: #04060a;
  --seam-to: #061520;
}

button,
a,
[role='button'] {
  touch-action: manipulation;
}

/* ── Accessibility ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  /* Motion is intentionally forced on for this presentation build. */
}

/* ── Focus Styles ───────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ── Hero Section ───────────────────────────────────────────── */
#hero {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 0 1.5rem;
  text-align: center;
}

/* Particle canvas fills the hero background */
#particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none; /* mouse events forwarded from parent */
}

/* All hero content sits above the canvas */
.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  max-width: 800px;
}

.hero-label {
  margin-bottom: 0.25rem;
}

/* Main headline */
.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text-primary);
  min-height: 1.2em; /* prevent layout shift while typing */
}

/* Blinking cursor */
.hero-cursor {
  display: inline-block;
  color: var(--color-primary);
  animation: blink 0.8s step-end infinite;
  margin-left: 2px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* Subtitle — hidden initially, JS fades it in */
.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 560px;
  opacity: 0;
  transition: opacity 800ms var(--easing);
}

.hero-subtitle.visible {
  opacity: 1;
}

/* Group members row */
.hero-members {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  opacity: 0;
  transition: opacity 800ms var(--easing) 200ms;
}

.hero-members.visible {
  opacity: 1;
}

.hero-dot {
  color: var(--color-primary);
  font-size: 1rem;
}

/* Scroll-down arrow — pinned to bottom of section */
.scroll-arrow {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid color-mix(in srgb, var(--color-primary) 40%, transparent);
  transition: box-shadow var(--duration-hover) var(--easing),
              border-color var(--duration-hover) var(--easing);
  animation: bounce 2s ease-in-out infinite;
  text-decoration: none;
}

.scroll-arrow:hover {
  box-shadow: 0 0 16px color-mix(in srgb, var(--color-primary) 50%, transparent);
  border-color: var(--color-primary);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ── Section 2: What Is the Information Age? ───────────────── */
.what-is-section {
  --section-seam-color: #0a0a0f;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at top left, color-mix(in srgb, var(--color-primary) 12%, transparent), transparent 38%),
    radial-gradient(circle at bottom right, color-mix(in srgb, var(--color-accent) 12%, transparent), transparent 42%),
    var(--color-bg);
}

.what-is-layout {
  display: grid;
  gap: 2rem;
}

.what-is-heading {
  display: grid;
  gap: 0.9rem;
  max-width: 760px;
}

.what-is-heading h2 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  max-width: 12ch;
}

.what-is-intro {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 62ch;
}

.what-is-grid {
  display: grid;
  gap: 1.5rem;
  align-items: start;
}

.definition-card,
.comparison-panel,
.quote-card {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.definition-card::before,
.comparison-panel::before,
.quote-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent 55%);
  pointer-events: none;
  z-index: -1;
}

.definition-card {
  display: grid;
  gap: 1rem;
  min-height: 100%;
  align-content: start;
}

.definition-kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.definition-card h3,
.comparison-header h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.definition-lead {
  font-size: 1.05rem;
  color: var(--color-text-primary);
}

.definition-points {
  list-style: none;
  display: grid;
  gap: 0.9rem;
}

.definition-points li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--color-text-secondary);
}

.definition-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65rem;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  box-shadow: 0 0 12px color-mix(in srgb, var(--color-primary) 40%, transparent);
}

.comparison-panel {
  background-color: color-mix(in srgb, var(--color-surface) 92%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 18%, transparent);
  border-radius: 0.75rem;
  padding: 1.5rem;
  display: grid;
  gap: 1.25rem;
  align-content: start;
}

.comparison-header {
  display: grid;
  gap: 0.5rem;
}

.comparison-columns {
  display: grid;
  gap: 1rem;
}

.comparison-column {
  border-radius: 0.9rem;
  border: 1px solid color-mix(in srgb, var(--color-primary) 16%, transparent);
  padding: 1rem;
  display: grid;
  gap: 1rem;
  min-width: 0;
}

.industrial-age {
  background: linear-gradient(180deg, color-mix(in srgb, #f59e0b 12%, var(--color-surface)), color-mix(in srgb, var(--color-surface) 92%, transparent));
}

.information-age {
  background: linear-gradient(180deg, color-mix(in srgb, var(--color-primary) 12%, var(--color-surface)), color-mix(in srgb, var(--color-surface) 92%, transparent));
}

.comparison-era-heading {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.comparison-icon {
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.9rem;
  background: color-mix(in srgb, var(--color-bg) 35%, transparent);
  color: var(--color-primary);
  border: 1px solid color-mix(in srgb, var(--color-primary) 20%, transparent);
  box-shadow: 0 0 18px color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.industrial-age .comparison-icon {
  color: #f59e0b;
  border-color: color-mix(in srgb, #f59e0b 28%, transparent);
  box-shadow: 0 0 18px color-mix(in srgb, #f59e0b 12%, transparent);
}

.comparison-icon svg {
  width: 1.5rem;
  height: 1.5rem;
  fill: currentColor;
}

.comparison-era-label {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
}

.comparison-era-subtitle {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.comparison-list {
  display: grid;
  gap: 0.85rem;
}

.comparison-row {
  display: grid;
  gap: 0.2rem;
  padding-top: 0.85rem;
  border-top: 1px solid color-mix(in srgb, var(--color-primary) 14%, transparent);
}

.comparison-row:first-child {
  padding-top: 0;
  border-top: none;
}

.comparison-row dt {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.comparison-row dd {
  margin: 0;
  color: var(--color-text-primary);
}

.quote-card {
  background-color: color-mix(in srgb, var(--color-surface) 94%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-accent) 18%, transparent);
  border-radius: 0.9rem;
  padding: 1.5rem;
  display: grid;
  gap: 1rem;
}

.quote-card blockquote {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 1.9rem);
  line-height: 1.35;
  max-width: 28ch;
}

.quote-card figcaption {
  display: flex;
}

.quote-attribution {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  text-decoration: none;
}

.quote-attribution::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  transition: transform var(--duration-hover) var(--easing);
}

.quote-attribution:hover::after,
.quote-attribution:focus-visible::after {
  transform: scaleX(1);
}

@media (min-width: 768px) {
  .what-is-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 1.75rem;
  }

  .comparison-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .quote-card {
    grid-template-columns: minmax(0, 2.2fr) auto;
    align-items: end;
    justify-content: space-between;
  }

  .quote-card blockquote {
    max-width: 34ch;
  }
}

/* ── Section 3: Timeline ────────────────────────────────────── */
.timeline-section {
  --section-seam-color: #1a0618;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at top right, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent 34%),
    radial-gradient(circle at 20% 80%, color-mix(in srgb, var(--color-accent) 10%, transparent), transparent 36%),
    linear-gradient(180deg, color-mix(in srgb, var(--color-bg) 88%, #06131d), var(--color-bg));
}

.timeline-layout {
  position: relative;
  display: grid;
  gap: 1.5rem;
}

.timeline-heading {
  display: grid;
  gap: 0.85rem;
  max-width: 780px;
}

.timeline-heading h2 {
  font-size: clamp(2rem, 5vw, 3.8rem);
  max-width: 10ch;
}

.timeline-intro {
  color: var(--color-text-secondary);
  max-width: 60ch;
}

.timeline-current {
  position: sticky;
  top: 4.75rem;
  z-index: 20;
  display: grid;
  gap: 0.35rem;
  width: min(100%, 340px);
  background-color: color-mix(in srgb, var(--color-surface) 88%, transparent);
  backdrop-filter: blur(14px);
}

.timeline-current-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
}

.timeline-current-range {
  color: var(--color-text-secondary);
}

.timeline-track {
  position: relative;
  display: grid;
  gap: 1.5rem;
  padding-left: 1.35rem;
}

.timeline-track::before {
  content: "";
  position: absolute;
  top: 0.5rem;
  bottom: 0.5rem;
  left: 0.45rem;
  width: 1px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--color-primary) 72%, transparent), color-mix(in srgb, var(--color-accent) 55%, transparent));
  opacity: 0.65;
}

.timeline-era {
  position: relative;
  padding: 1.25rem 1rem 1rem 1.4rem;
  border-radius: 1rem;
  border: 1px solid color-mix(in srgb, var(--color-primary) 14%, transparent);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--color-primary) 8%, transparent), transparent 40%),
    color-mix(in srgb, var(--color-surface) 94%, transparent);
  scroll-margin-top: 7rem;
}

.timeline-era::before {
  content: "";
  position: absolute;
  top: 1.45rem;
  left: -0.1rem;
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 999px;
  background-color: var(--color-bg);
  border: 2px solid var(--color-primary);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.timeline-era-header {
  display: grid;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.timeline-era-range {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.timeline-era h3 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
}

.timeline-era-summary {
  color: var(--color-text-secondary);
  max-width: 42ch;
}

.timeline-card-grid {
  display: grid;
  gap: 1rem;
}

.timeline-card {
  padding: 0;
  overflow: hidden;
  background-color: color-mix(in srgb, var(--color-surface) 94%, transparent);
  transform-origin: center;
  transition:
    transform var(--duration-hover) var(--easing),
    box-shadow var(--duration-hover) var(--easing),
    border-color var(--duration-hover) var(--easing);
}

.timeline-card.is-open {
  border-color: color-mix(in srgb, var(--color-primary) 42%, transparent);
  box-shadow: 0 0 26px color-mix(in srgb, var(--color-primary) 16%, transparent);
}

.timeline-card-toggle {
  width: 100%;
  border: none;
  background: transparent;
  color: inherit;
  text-align: left;
  padding: 1.15rem 1.15rem 0.95rem;
  display: grid;
  gap: 0.95rem;
  cursor: pointer;
}

.timeline-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.timeline-card-year {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  background-color: color-mix(in srgb, var(--color-primary) 10%, transparent);
  color: var(--color-primary);
}

.timeline-card-icon {
  width: 2.6rem;
  height: 2.6rem;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.85rem;
  color: var(--color-primary);
  background-color: color-mix(in srgb, var(--color-bg) 38%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 18%, transparent);
  box-shadow: 0 0 18px color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.timeline-card-icon svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.timeline-card-copy {
  display: grid;
  gap: 0.45rem;
}

.timeline-card-copy h4 {
  font-size: 1.12rem;
}

.timeline-card-copy p {
  color: var(--color-text-secondary);
  max-width: 32ch;
}

.timeline-card-chevron {
  justify-self: end;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--color-primary);
  transition: transform var(--duration-hover) var(--easing);
}

.timeline-card.is-open .timeline-card-chevron {
  transform: rotate(45deg);
}

.timeline-card-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-default) var(--easing);
}

.timeline-card-panel-inner {
  display: grid;
  gap: 0.85rem;
  padding: 0 1.15rem 1.15rem;
  border-top: 1px solid color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.timeline-card-panel-inner > p:first-child {
  padding-top: 1rem;
  color: var(--color-text-secondary);
}

.timeline-card-fact {
  color: var(--color-text-primary);
}

.timeline-card-fact span {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--color-primary);
}

@media (hover: hover) {
  .timeline-card:hover {
    transform: translateY(-3px) scale(1.01);
    border-color: color-mix(in srgb, var(--color-primary) 32%, transparent);
    box-shadow: 0 0 24px color-mix(in srgb, var(--color-primary) 14%, transparent);
  }

  .timeline-card:hover .timeline-card-icon {
    box-shadow: 0 0 22px color-mix(in srgb, var(--color-primary) 18%, transparent);
  }
}

@media (min-width: 768px) {
  html {
    scroll-snap-type: y proximity;
  }

  .timeline-layout {
    gap: 1.75rem;
  }

  .timeline-current {
    top: 5rem;
  }

  .timeline-era {
    scroll-snap-align: start;
    scroll-snap-stop: normal;
    padding: 1.35rem 1.2rem 1.2rem 1.6rem;
  }

  .timeline-era-header {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: end;
  }

  .timeline-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ── Section 4: Impact on Quality of Life ───────────────────── */
.impact-section {
  --section-seam-color: #071723;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at top left, color-mix(in srgb, var(--color-accent) 10%, transparent), transparent 34%),
    radial-gradient(circle at 85% 20%, color-mix(in srgb, var(--color-primary) 12%, transparent), transparent 32%),
    linear-gradient(180deg, color-mix(in srgb, var(--color-bg) 92%, #060d15), color-mix(in srgb, var(--color-bg) 86%, #120714));
}

.impact-layout {
  display: grid;
  gap: 1.5rem;
}

.impact-heading {
  display: grid;
  gap: 0.85rem;
  max-width: 780px;
}

.impact-heading h2 {
  font-size: clamp(2rem, 5vw, 3.8rem);
  max-width: 10ch;
}

.impact-intro {
  color: var(--color-text-secondary);
  max-width: 62ch;
}

.impact-grid {
  display: grid;
  gap: 1rem;
}

.impact-card {
  position: relative;
  min-height: 21rem;
  transition: transform var(--duration-hover) var(--easing);
}

.impact-card-toggle {
  width: 100%;
  min-height: 21rem;
  padding: 0;
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  text-align: left;
  perspective: 1400px;
}

.impact-card-scene {
  position: relative;
  display: block;
  min-height: 21rem;
  transform-style: preserve-3d;
  transition: transform 700ms var(--easing);
  will-change: transform;
}

.impact-card.is-flipped .impact-card-scene {
  transform: rotateY(180deg);
}

.impact-card-face {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 1.35rem;
  padding: 1.35rem;
  border-radius: 1rem;
  border: 1px solid color-mix(in srgb, var(--color-primary) 16%, transparent);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent 48%),
    color-mix(in srgb, var(--color-surface) 94%, transparent);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 12%, transparent),
    0 24px 44px color-mix(in srgb, var(--color-primary) 8%, transparent);
  transition:
    border-color var(--duration-hover) var(--easing),
    box-shadow var(--duration-hover) var(--easing),
    background-color var(--duration-hover) var(--easing);
}

.impact-card-back {
  transform: rotateY(180deg);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--color-accent) 12%, transparent), transparent 46%),
    linear-gradient(180deg, color-mix(in srgb, var(--color-surface) 98%, transparent), color-mix(in srgb, var(--color-surface) 92%, transparent));
}

.impact-card-topline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.impact-card-icon {
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.95rem;
  color: var(--color-primary);
  background-color: color-mix(in srgb, var(--color-bg) 40%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 18%, transparent);
  box-shadow: 0 0 22px color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.impact-card-icon svg {
  width: 1.4rem;
  height: 1.4rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.impact-card-hint,
.impact-card-back-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.impact-card-hint {
  color: var(--color-text-secondary);
}

.impact-card-back-label {
  color: var(--color-accent);
}

.impact-card-copy {
  align-self: end;
  display: grid;
  gap: 0.75rem;
}

.impact-card-title {
  font-family: var(--font-heading);
  font-size: clamp(1.65rem, 4vw, 2.35rem);
  font-weight: 600;
  line-height: 1.05;
}

.impact-card-tagline {
  color: var(--color-text-secondary);
  max-width: 28ch;
}

.impact-card-bullets {
  display: grid;
  gap: 0.85rem;
  align-content: start;
}

.impact-card-bullets > span {
  position: relative;
  padding-left: 1.15rem;
  color: var(--color-text-secondary);
}

.impact-card-bullets > span::before {
  content: "";
  position: absolute;
  top: 0.6rem;
  left: 0;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  box-shadow: 0 0 10px color-mix(in srgb, var(--color-primary) 30%, transparent);
}

.impact-card.is-flipped .impact-card-back {
  border-color: color-mix(in srgb, var(--color-accent) 36%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 12%, transparent),
    0 28px 48px color-mix(in srgb, var(--color-accent) 10%, transparent);
}

@media (hover: hover) {
  .impact-card:hover {
    transform: translateY(-4px);
  }

  .impact-card:hover .impact-card-face {
    border-color: color-mix(in srgb, var(--color-primary) 34%, transparent);
    box-shadow:
      inset 0 1px 0 color-mix(in srgb, white 12%, transparent),
      0 0 26px color-mix(in srgb, var(--color-primary) 12%, transparent);
  }

  .impact-card:hover .impact-card-icon {
    box-shadow: 0 0 26px color-mix(in srgb, var(--color-primary) 18%, transparent);
  }
}

@media (min-width: 768px) {
  .impact-layout {
    gap: 1.75rem;
  }

  .impact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .impact-card,
  .impact-card-toggle,
  .impact-card-scene {
    min-height: 21.75rem;
  }
}

/* —— Section 5: Challenges & Ethical Issues ——————————————— */
.challenges-section {
  --section-seam-color: #180914;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 14% 18%, color-mix(in srgb, var(--color-accent) 12%, transparent), transparent 30%),
    radial-gradient(circle at 84% 78%, color-mix(in srgb, var(--color-primary) 12%, transparent), transparent 34%),
    linear-gradient(180deg, color-mix(in srgb, var(--color-bg) 88%, #14070f), color-mix(in srgb, var(--color-bg) 94%, #05070d));
}

.challenges-layout {
  display: grid;
  gap: 1.6rem;
}

.challenges-heading {
  display: grid;
  gap: 0.85rem;
  max-width: 780px;
}

.challenges-heading h2 {
  font-size: clamp(2rem, 5vw, 3.8rem);
  max-width: 12ch;
}

.challenges-intro {
  color: var(--color-text-secondary);
  max-width: 62ch;
}

.challenges-carousel {
  display: grid;
  gap: 1.25rem;
  width: 100%;
}

.challenges-stage-shell {
  --challenge-shift-near: clamp(1.25rem, 7vw, 7.5rem);
  --challenge-shift-far: clamp(2.25rem, 12vw, 11rem);
  position: relative;
  min-height: clamp(28rem, 58vw, 33rem);
  overflow: clip;
}

.challenges-stage {
  position: relative;
  min-height: inherit;
  touch-action: pan-y;
  user-select: none;
}

.challenge-card {
  --stack-x: 0px;
  --stack-scale: 0.82;
  --stack-rotate: 0deg;
  --stack-opacity: 0;
  --stack-blur: 5px;
  --stack-z: 1;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: min(100%, 44rem);
  padding: 1.45rem;
  display: grid;
  gap: 1rem;
  align-content: start;
  border-radius: 1.15rem;
  border: 1px solid color-mix(in srgb, var(--color-accent) 14%, transparent);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--color-accent) 10%, transparent), transparent 40%),
    linear-gradient(180deg, color-mix(in srgb, var(--color-surface) 98%, transparent), color-mix(in srgb, var(--color-surface) 92%, transparent));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 10%, transparent),
    0 24px 48px color-mix(in srgb, #000 22%, transparent);
  backdrop-filter: blur(14px);
  transform: translateX(calc(-50% + var(--stack-x))) scale(var(--stack-scale)) rotate(var(--stack-rotate));
  transform-origin: center center;
  opacity: var(--stack-opacity);
  filter: blur(var(--stack-blur));
  z-index: var(--stack-z);
  pointer-events: none;
  transition:
    transform 700ms var(--easing),
    opacity 500ms var(--easing),
    filter 500ms var(--easing),
    border-color var(--duration-hover) var(--easing),
    box-shadow var(--duration-hover) var(--easing);
}

.challenge-card.is-active {
  --stack-scale: 1;
  --stack-opacity: 1;
  --stack-blur: 0px;
  --stack-z: 5;
  pointer-events: auto;
  border-color: color-mix(in srgb, var(--color-accent) 28%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 12%, transparent),
    0 28px 54px color-mix(in srgb, var(--color-accent) 14%, transparent);
}

.challenge-card.is-prev {
  --stack-x: calc(var(--challenge-shift-near) * -1);
  --stack-scale: 0.92;
  --stack-rotate: -5deg;
  --stack-opacity: 0.74;
  --stack-blur: 0.4px;
  --stack-z: 4;
}

.challenge-card.is-next {
  --stack-x: var(--challenge-shift-near);
  --stack-scale: 0.92;
  --stack-rotate: 5deg;
  --stack-opacity: 0.74;
  --stack-blur: 0.4px;
  --stack-z: 4;
}

.challenge-card.is-before {
  --stack-x: calc(var(--challenge-shift-far) * -1);
  --stack-scale: 0.85;
  --stack-rotate: -8deg;
  --stack-opacity: 0.28;
  --stack-blur: 1.6px;
  --stack-z: 3;
}

.challenge-card.is-after {
  --stack-x: var(--challenge-shift-far);
  --stack-scale: 0.85;
  --stack-rotate: 8deg;
  --stack-opacity: 0.28;
  --stack-blur: 1.6px;
  --stack-z: 3;
}

.challenge-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.challenge-card-eyebrow,
.challenge-card-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.challenge-card-eyebrow {
  color: var(--color-accent);
}

.challenge-card-icon {
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.95rem;
  color: var(--color-primary);
  background-color: color-mix(in srgb, var(--color-bg) 32%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 18%, transparent);
  box-shadow: 0 0 22px color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.challenge-card-icon svg,
.challenges-nav svg {
  width: 1.35rem;
  height: 1.35rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.challenge-card-copy {
  display: grid;
  gap: 0.75rem;
}

.challenge-card-copy h3 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  max-width: 12ch;
}

.challenge-card-copy p {
  color: var(--color-text-secondary);
  max-width: 40ch;
}

.challenge-card-example-box {
  margin-top: auto;
  display: grid;
  gap: 0.7rem;
  padding: 1rem;
  border-radius: 0.95rem;
  border: 1px solid color-mix(in srgb, var(--color-primary) 14%, transparent);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--color-bg) 22%, transparent), transparent),
    color-mix(in srgb, var(--color-bg) 30%, transparent);
}

.challenge-card-label {
  color: var(--color-primary);
}

.challenge-card-example {
  color: var(--color-text-primary);
}

.challenges-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.95rem;
}

.challenges-nav {
  width: 2.9rem;
  height: 2.9rem;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--color-primary) 24%, transparent);
  background-color: color-mix(in srgb, var(--color-surface) 88%, transparent);
  color: var(--color-primary);
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition:
    transform var(--duration-hover) var(--easing),
    box-shadow var(--duration-hover) var(--easing),
    border-color var(--duration-hover) var(--easing),
    background-color var(--duration-hover) var(--easing);
}

.challenges-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.challenges-dot {
  width: 0.82rem;
  height: 0.82rem;
  border: 1px solid color-mix(in srgb, var(--color-primary) 36%, transparent);
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  transition:
    transform var(--duration-hover) var(--easing),
    box-shadow var(--duration-hover) var(--easing),
    border-color var(--duration-hover) var(--easing),
    background-color var(--duration-hover) var(--easing),
    width var(--duration-hover) var(--easing);
}

.challenges-dot.is-active {
  width: 2.4rem;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  border-color: transparent;
  box-shadow: 0 0 18px color-mix(in srgb, var(--color-accent) 24%, transparent);
}

@media (hover: hover) {
  .challenge-card.is-active:hover {
    border-color: color-mix(in srgb, var(--color-accent) 40%, transparent);
    box-shadow:
      inset 0 1px 0 color-mix(in srgb, white 12%, transparent),
      0 0 28px color-mix(in srgb, var(--color-accent) 16%, transparent);
  }

  .challenges-nav:hover,
  .challenges-dot:hover {
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--color-primary) 48%, transparent);
    box-shadow: 0 0 18px color-mix(in srgb, var(--color-primary) 16%, transparent);
  }
}

@media (max-width: 767px) {
  .challenges-stage-shell {
    --challenge-shift-near: 1.4rem;
    --challenge-shift-far: 2.35rem;
    min-height: 34rem;
    overflow: visible;
    padding: 0.35rem 0;
  }

  .challenges-stage {
    min-height: calc(34rem - 0.7rem);
  }

  .challenge-card {
    top: 0.2rem;
    bottom: 0.2rem;
    width: calc(100% - 0.5rem);
    padding: 1.2rem;
    overflow-y: auto;
  }

  .challenge-card.is-active {
    /* let active card scroll if content overflows */
    overflow-y: auto;
  }

  .challenge-card.is-prev,
  .challenge-card.is-next {
    --stack-opacity: 0.52;
  }

  .challenge-card.is-before,
  .challenge-card.is-after {
    --stack-opacity: 0.12;
  }
}

@media (max-width: 480px) {
  .challenges-stage-shell {
    min-height: 38rem;
  }

  .challenges-stage {
    min-height: calc(38rem - 0.7rem);
  }

  .challenge-card-copy h3 {
    font-size: 1.4rem;
  }

  .challenge-card-copy p {
    font-size: 0.875rem;
    max-width: unset;
  }

  .challenge-card-example-box {
    padding: 0.75rem;
  }

  .challenge-card-example {
    font-size: 0.84rem;
  }
}

@media (min-width: 768px) {
  .challenges-layout {
    gap: 1.85rem;
  }

  .challenge-card {
    padding: 1.65rem;
  }
}

/* ── Utility: Container ─────────────────────────────────────── */
/* —— Section 6: The Future ———————————————————————————————— */
.future-section {
  --section-seam-color: #14070f;
  --future-layer-1-x: 0px;
  --future-layer-1-y: 0px;
  --future-layer-2-x: 0px;
  --future-layer-2-y: 0px;
  --future-layer-3-x: 0px;
  --future-layer-3-y: 0px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 14% 18%, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent 28%),
    radial-gradient(circle at 85% 24%, color-mix(in srgb, var(--color-accent) 12%, transparent), transparent 32%),
    linear-gradient(180deg, color-mix(in srgb, var(--color-bg) 80%, #04101c), color-mix(in srgb, var(--color-bg) 94%, #070711));
}

.future-backdrop {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.future-layer {
  position: absolute;
  opacity: 0.75;
  will-change: transform;
  transition: transform 220ms linear;
}

.future-layer-halo {
  top: 6%;
  right: -8%;
  width: clamp(16rem, 34vw, 34rem);
  height: clamp(16rem, 34vw, 34rem);
  border-radius: 999px;
  background:
    radial-gradient(circle at 35% 35%, color-mix(in srgb, var(--color-primary) 32%, transparent), transparent 36%),
    radial-gradient(circle at 65% 60%, color-mix(in srgb, var(--color-accent) 26%, transparent), transparent 42%);
  filter: blur(10px);
  transform: translate3d(var(--future-layer-1-x), var(--future-layer-1-y), 0);
}

.future-layer-orbit {
  left: -5rem;
  bottom: 6%;
  width: clamp(14rem, 28vw, 24rem);
  height: clamp(14rem, 28vw, 24rem);
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--color-primary) 22%, transparent);
  box-shadow:
    inset 0 0 24px color-mix(in srgb, var(--color-primary) 10%, transparent),
    0 0 28px color-mix(in srgb, var(--color-primary) 8%, transparent);
  transform: translate3d(var(--future-layer-2-x), var(--future-layer-2-y), 0);
}

.future-layer-orbit::before,
.future-layer-orbit::after {
  content: "";
  position: absolute;
  inset: 14%;
  border-radius: inherit;
  border: 1px solid color-mix(in srgb, var(--color-accent) 18%, transparent);
}

.future-layer-orbit::after {
  inset: 28%;
  border-color: color-mix(in srgb, var(--color-primary) 18%, transparent);
}

.future-layer-grid {
  inset: auto 0 0 0;
  height: 42%;
  background-image:
    linear-gradient(color-mix(in srgb, var(--color-primary) 8%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--color-primary) 8%, transparent) 1px, transparent 1px);
  background-size: 2.4rem 2.4rem;
  mask-image: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.85) 18%, rgba(0, 0, 0, 1));
  opacity: 0.26;
  transform: perspective(900px) rotateX(68deg) translate3d(var(--future-layer-3-x), var(--future-layer-3-y), 0);
  transform-origin: center bottom;
}

.future-layout {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.55rem;
}

.future-heading {
  display: grid;
  gap: 0.85rem;
  max-width: 780px;
}

.future-heading h2 {
  font-size: clamp(2rem, 5vw, 3.8rem);
  max-width: 11ch;
}

.future-intro {
  color: var(--color-text-secondary);
  max-width: 62ch;
}

.future-grid {
  display: grid;
  gap: 1rem;
}

.future-card {
  position: relative;
  padding: 0;
  overflow: hidden;
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent 40%),
    linear-gradient(180deg, color-mix(in srgb, var(--color-surface) 98%, transparent), color-mix(in srgb, var(--color-surface) 92%, transparent));
  backdrop-filter: blur(14px);
  transition:
    transform var(--duration-hover) var(--easing),
    border-color var(--duration-hover) var(--easing),
    box-shadow var(--duration-hover) var(--easing);
}

.future-card.is-open {
  border-color: color-mix(in srgb, var(--color-accent) 34%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 12%, transparent),
    0 0 28px color-mix(in srgb, var(--color-accent) 14%, transparent);
}

.future-card-toggle {
  width: 100%;
  border: none;
  background: transparent;
  color: inherit;
  text-align: left;
  padding: 1.2rem 1.2rem 1rem;
  display: grid;
  gap: 0.9rem;
  cursor: pointer;
}

.future-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.future-card-icon {
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.95rem;
  color: var(--color-primary);
  background-color: color-mix(in srgb, var(--color-bg) 35%, transparent);
  border: 1px solid color-mix(in srgb, var(--color-primary) 18%, transparent);
  box-shadow: 0 0 22px color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.future-card-icon svg {
  width: 1.45rem;
  height: 1.45rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.future-card-eta,
.future-card-panel-inner span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.future-card-eta {
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  background-color: color-mix(in srgb, var(--color-accent) 12%, transparent);
  color: var(--color-accent);
}

.future-card-copy {
  display: grid;
  gap: 0.5rem;
}

.future-card-copy h3 {
  font-size: clamp(1.3rem, 3.6vw, 1.85rem);
}

.future-card-copy p {
  color: var(--color-text-secondary);
}

.future-card-chevron {
  justify-self: end;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--color-primary);
  transition: transform var(--duration-hover) var(--easing);
}

.future-card.is-open .future-card-chevron {
  transform: rotate(45deg);
}

.future-card-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-default) var(--easing);
}

.future-card-panel-inner {
  display: grid;
  gap: 0.9rem;
  padding: 0 1.2rem 1.2rem;
  border-top: 1px solid color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.future-card-panel-inner > p:first-child {
  padding-top: 1rem;
}

.future-card-panel-inner p {
  color: var(--color-text-secondary);
}

.future-card-panel-inner span {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--color-primary);
}

@media (hover: hover) {
  .future-card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--color-primary) 30%, transparent);
    box-shadow: 0 0 24px color-mix(in srgb, var(--color-primary) 12%, transparent);
  }

  .future-card:hover .future-card-icon {
    box-shadow: 0 0 24px color-mix(in srgb, var(--color-primary) 16%, transparent);
  }
}

@media (min-width: 768px) {
  .future-layout {
    gap: 1.8rem;
  }

  .future-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.15rem;
  }
}

@media (min-width: 1100px) {
  .future-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* —— Section 7: Live Poll ———————————————————————————————— */
.poll-section {
  --section-seam-color: #060f1a;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 10% 20%, color-mix(in srgb, var(--color-primary) 12%, transparent), transparent 34%),
    radial-gradient(circle at 90% 80%, color-mix(in srgb, var(--color-accent) 12%, transparent), transparent 36%),
    linear-gradient(180deg, color-mix(in srgb, var(--color-bg) 82%, #06131f), color-mix(in srgb, var(--color-bg) 95%, #05070d));
}

.poll-layout {
  display: grid;
  gap: 1.6rem;
}

.poll-heading {
  display: grid;
  gap: 0.85rem;
  max-width: 760px;
}

.poll-heading h2 {
  font-size: clamp(2rem, 5vw, 3.8rem);
  max-width: 13ch;
}

.poll-intro {
  color: var(--color-text-secondary);
  max-width: 60ch;
}

.poll-grid {
  display: grid;
  gap: 1.1rem;
}

.poll-vote-card,
.poll-results-card {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.poll-vote-card h3,
.poll-results-card h3 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
}

.poll-loading {
  min-height: 1.3em;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.poll-loading.is-visible {
  color: color-mix(in srgb, var(--color-primary) 82%, white);
}

.poll-options {
  display: grid;
  gap: 0.7rem;
}

.poll-option {
  border: 1px solid color-mix(in srgb, var(--color-primary) 24%, transparent);
  border-radius: 0.7rem;
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  color: var(--color-text-primary);
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 500;
  padding: 0.85rem 0.95rem;
  text-align: left;
  cursor: pointer;
  transition:
    transform var(--duration-hover) var(--easing),
    border-color var(--duration-hover) var(--easing),
    box-shadow var(--duration-hover) var(--easing),
    background-color var(--duration-hover) var(--easing),
    opacity var(--duration-hover) var(--easing);
}

.poll-option:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--color-primary) 44%, transparent);
  box-shadow: 0 0 18px color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.poll-option:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.poll-option.is-busy {
  opacity: 0.76;
}

.poll-option.is-selected {
  border-color: transparent;
  background: linear-gradient(135deg, color-mix(in srgb, var(--color-primary) 22%, transparent), color-mix(in srgb, var(--color-accent) 20%, transparent));
  box-shadow: 0 0 20px color-mix(in srgb, var(--color-primary) 16%, transparent);
}

.poll-confirmation {
  min-height: 1.4em;
  color: var(--color-success);
  font-weight: 600;
}

.poll-error {
  min-height: 1.3em;
  color: #ff6b8b;
  font-size: 0.92rem;
}

.poll-qr-wrap {
  margin-top: 0.35rem;
  padding: 0.85rem;
  border-radius: 0.85rem;
  border: 1px dashed color-mix(in srgb, var(--color-primary) 28%, transparent);
  background: color-mix(in srgb, var(--color-bg) 22%, transparent);
  display: grid;
  justify-items: center;
  gap: 0.6rem;
}

.poll-qr-title {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.poll-qr-box {
  width: 132px;
  min-height: 132px;
  display: grid;
  place-items: center;
  border-radius: 0.65rem;
  background-color: #ffffff;
  padding: 0.45rem;
}

.poll-qr-box img,
.poll-qr-box canvas {
  width: 100%;
  height: auto;
}

.poll-qr-link {
  color: var(--color-primary);
  font-size: 0.88rem;
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: break-all;
}

.poll-admin {
  margin-top: 0.35rem;
}

.poll-results-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.poll-total {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.poll-results-list {
  display: grid;
  gap: 0.75rem;
}

.poll-result {
  display: grid;
  gap: 0.35rem;
}

.poll-result-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
}

.poll-result-name {
  font-size: 0.96rem;
}

.poll-result-count {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.poll-result-track {
  width: 100%;
  height: 0.68rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-bg) 42%, transparent);
  overflow: hidden;
}

.poll-result-fill {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width 450ms var(--easing);
}

@media (min-width: 900px) {
  .poll-layout {
    gap: 1.85rem;
  }

  .poll-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .poll-vote-card,
  .poll-results-card {
    min-height: 100%;
  }
}

/* —— Section 8: Internet Disappearance Simulator ——————————— */
.simulator-section {
  --section-seam-color: #090713;
  position: relative;
  overflow: hidden;
  transition: background-color 420ms var(--easing);
  background:
    radial-gradient(circle at 18% 16%, color-mix(in srgb, var(--color-accent) 13%, transparent), transparent 35%),
    radial-gradient(circle at 84% 78%, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent 34%),
    linear-gradient(180deg, color-mix(in srgb, var(--color-bg) 82%, #1b050f), color-mix(in srgb, var(--color-bg) 95%, #04060a));
}

body.internet-disabled {
  background-color: #1a1a1a;
}

body.internet-disabled .simulator-section {
  background:
    radial-gradient(circle at 16% 18%, rgba(123, 123, 123, 0.16), transparent 34%),
    radial-gradient(circle at 86% 75%, rgba(94, 94, 94, 0.12), transparent 34%),
    linear-gradient(180deg, #242424, #161616);
}

.simulator-layout {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 1.6rem;
}

.simulator-heading {
  display: grid;
  gap: 0.85rem;
  max-width: 760px;
}

.simulator-heading h2 {
  font-size: clamp(2rem, 5vw, 3.8rem);
  max-width: 13ch;
}

.simulator-intro {
  color: var(--color-text-secondary);
  max-width: 62ch;
}

.simulator-panel {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.simulator-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #ff809f;
}

.simulator-trigger {
  width: 100%;
  max-width: 30rem;
  justify-self: start;
  border: 1px solid color-mix(in srgb, #ff335f 46%, transparent);
  border-radius: 0.9rem;
  background: linear-gradient(135deg, #ff335f, #ff006e 58%, #c90053);
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  font-weight: 700;
  padding: 1rem 1.2rem;
  text-align: center;
  cursor: pointer;
  box-shadow:
    0 0 0 rgba(255, 0, 110, 0),
    0 12px 28px rgba(255, 0, 110, 0.28);
  animation: simPulse 1.5s ease-in-out infinite;
  transition:
    transform var(--duration-hover) var(--easing),
    box-shadow var(--duration-hover) var(--easing),
    filter var(--duration-hover) var(--easing),
    opacity var(--duration-hover) var(--easing);
}

.simulator-trigger:hover {
  transform: translateY(-2px);
  box-shadow:
    0 0 24px rgba(255, 0, 110, 0.42),
    0 14px 30px rgba(255, 0, 110, 0.3);
}

.simulator-trigger:disabled {
  cursor: not-allowed;
  opacity: 0.72;
  filter: grayscale(0.22);
  animation-play-state: paused;
}

.simulator-restore-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.simulator-restore {
  border-color: color-mix(in srgb, var(--color-success) 55%, transparent);
  color: var(--color-success);
}

.simulator-restore:hover {
  background-color: color-mix(in srgb, var(--color-success) 12%, transparent);
  box-shadow: 0 0 16px color-mix(in srgb, var(--color-success) 38%, transparent);
}

.simulator-status {
  min-height: 1.4em;
  color: var(--color-text-secondary);
}

.simulator-popup-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9800;
}

.simulator-error-popup {
  position: fixed;
  max-width: min(18rem, calc(100vw - 2rem));
  padding: 0.65rem 0.8rem;
  border-radius: 0.55rem;
  border: 1px solid color-mix(in srgb, #ff5a7e 70%, transparent);
  background: color-mix(in srgb, #111111 86%, transparent);
  color: #ffdce6;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.38);
  opacity: 0;
  transform: translateY(8px) scale(0.97);
  animation: simPopupIn 220ms var(--easing) forwards;
}

.simulator-error-popup.is-leaving {
  animation: simPopupOut 220ms var(--easing) forwards;
}

.simulator-reflection {
  position: fixed;
  inset: 0;
  z-index: 9850;
  background: color-mix(in srgb, #0a0a0f 78%, transparent);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 320ms var(--easing);
}

.simulator-reflection.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.simulator-reflection-card {
  width: min(92vw, 42rem);
  padding: 1.4rem 1.25rem;
  border-radius: 0.9rem;
  border: 1px solid color-mix(in srgb, var(--color-primary) 24%, transparent);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--color-accent) 13%, transparent), transparent 48%),
    color-mix(in srgb, var(--color-surface) 94%, transparent);
  text-align: center;
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.34);
}

.simulator-reflection-card p {
  margin: 0;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  line-height: 1.55;
}

@keyframes simPulse {
  0%, 100% {
    box-shadow:
      0 0 0 rgba(255, 0, 110, 0),
      0 12px 28px rgba(255, 0, 110, 0.28);
  }
  50% {
    box-shadow:
      0 0 0 10px rgba(255, 0, 110, 0),
      0 0 24px rgba(255, 0, 110, 0.36),
      0 14px 30px rgba(255, 0, 110, 0.32);
  }
}

@keyframes simPopupIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes simPopupOut {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(8px) scale(0.96);
  }
}

@media (max-width: 767px) {
  .simulator-trigger {
    max-width: 100%;
    font-size: 1rem;
  }

  .simulator-error-popup {
    font-size: 0.76rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  /* Motion is intentionally forced on for this presentation build. */
}

/* —— Internet Simulator Overlay ————————————————————————————— */
.sim-overlay {
  position: fixed;
  inset: 0;
  z-index: 9900;
  background: #0d0d0d;
  display: flex;
  flex-direction: column;
  font-family: var(--font-mono);
  opacity: 0;
  pointer-events: none;
  transition: opacity 400ms ease;
  overflow: hidden;
}

.sim-overlay:not([hidden]) {
  opacity: 1;
  pointer-events: auto;
}

/* glitchy scanline texture */
.sim-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(255, 255, 255, 0.015) 2px,
    rgba(255, 255, 255, 0.015) 4px
  );
  pointer-events: none;
  z-index: 1;
}

/* Top status bar */
.sim-overlay-topbar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1.2rem;
  background: rgba(255, 30, 60, 0.08);
  border-bottom: 1px solid rgba(255, 30, 60, 0.2);
}

.sim-overlay-badge {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: #ff3355;
  animation: simBadgeBlink 1s step-end infinite;
}

@keyframes simBadgeBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

.sim-overlay-countdown {
  font-size: 0.75rem;
  color: rgba(255, 80, 100, 0.7);
  letter-spacing: 0.08em;
}

.sim-overlay-upcount {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: rgba(255, 180, 180, 0.55);
  letter-spacing: 0.06em;
}

/* Body layout */
.sim-overlay-body {
  position: relative;
  z-index: 2;
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  overflow: hidden;
}

@media (max-width: 700px) {
  .sim-overlay-body {
    grid-template-columns: 1fr;
  }
  .sim-overlay-right { display: none; }
}

/* Left side — error state */
.sim-overlay-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 2rem 1.5rem;
  border-right: 1px solid rgba(255, 30, 60, 0.12);
}

.sim-no-signal svg {
  width: 80px;
  height: 80px;
  animation: simSignalPulse 2s ease-in-out infinite;
}

@keyframes simSignalPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

.sim-overlay-headline {
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 2.2vw, 1.05rem);
  color: #ff5577;
  text-align: center;
  letter-spacing: 0.04em;
  word-break: break-all;
}

.sim-overlay-subline {
  font-size: 0.8rem;
  color: rgba(255, 180, 180, 0.6);
  text-align: center;
  margin: 0;
}

/* Error popup zone (contained within left side) */
.sim-popup-zone {
  position: relative;
  width: 100%;
  height: 120px;
  flex-shrink: 0;
}

.sim-popup-zone .sim-err-popup {
  position: absolute;
  background: #1a0a0a;
  border: 1px solid rgba(255, 50, 80, 0.45);
  border-radius: 0.4rem;
  overflow: hidden;
  font-size: 0.72rem;
  color: #ffb0b8;
  min-width: 180px;
  max-width: 260px;
  animation: simErrIn 200ms ease forwards;
  box-shadow: 0 8px 20px rgba(0,0,0,0.5);
}

.sim-err-popup.is-leaving {
  animation: simErrOut 200ms ease forwards;
}

.sim-err-popup-bar {
  background: rgba(255, 30, 60, 0.2);
  padding: 0.2rem 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  border-bottom: 1px solid rgba(255, 30, 60, 0.2);
  font-size: 0.65rem;
  color: rgba(255, 120, 140, 0.8);
}

.sim-err-popup-bar::before {
  content: '✕';
  font-size: 0.6rem;
  color: #ff5577;
}

.sim-err-popup-body {
  padding: 0.4rem 0.5rem;
}

@keyframes simErrIn {
  from { opacity: 0; transform: scale(0.9) translateY(-6px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes simErrOut {
  from { opacity: 1; transform: scale(1); }
  to   { opacity: 0; transform: scale(0.92) translateY(4px); }
}

/* Right side — terminal */
.sim-overlay-right {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  justify-content: center;
}

.sim-terminal {
  background: #0a0a0a;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0.6rem;
  overflow: hidden;
  max-height: 60vh;
}

.sim-terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sim-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.sim-dot.red    { background: #ff5f57; }
.sim-dot.yellow { background: #febc2e; }
.sim-dot.green  { background: #28c840; }

.sim-terminal-title {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.35);
  margin-left: auto;
}

.sim-terminal-body {
  padding: 0.8rem 1rem;
  font-size: 0.78rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  overflow-y: auto;
  max-height: calc(60vh - 2rem);
}

.sim-terminal-line {
  display: block;
  animation: simLineFade 120ms ease forwards;
  opacity: 0;
}

.sim-terminal-line.ok   { color: #28c840; }
.sim-terminal-line.warn { color: #febc2e; }
.sim-terminal-line.err  { color: #ff5f57; }
.sim-terminal-line.dim  { color: rgba(255,255,255,0.3); }

@keyframes simLineFade {
  from { opacity: 0; transform: translateX(-4px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Footer — reflection + restore */
.sim-overlay-footer {
  position: relative;
  z-index: 2;
  padding: 1rem 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
  text-align: center;
}

/* Screen flicker on disconnect */
@keyframes simFlicker {
  0%   { opacity: 1; }
  8%   { opacity: 0.1; }
  12%  { opacity: 0.85; }
  16%  { opacity: 0.05; }
  22%  { opacity: 1; }
  28%  { opacity: 0.3; }
  32%  { opacity: 1; }
  42%  { opacity: 0.7; }
  46%  { opacity: 0.05; }
  50%  { opacity: 1; }
  100% { opacity: 1; }
}

.sim-overlay.is-flickering {
  animation: simFlicker 600ms steps(1, end) forwards;
}

/* Terminal typing cursor */
.sim-terminal-cursor {
  display: inline-block;
  width: 0.55em;
  height: 1em;
  background: #28c840;
  vertical-align: text-bottom;
  animation: simCursorBlink 0.7s step-end infinite;
  margin-left: 2px;
}

@keyframes simCursorBlink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* Reflection stats — each stat fades up individually */
.sim-reflection-text {
  font-family: var(--font-body);
  font-size: clamp(0.85rem, 1.8vw, 0.95rem);
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  max-width: 68ch;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sim-stat {
  animation: simFadeUp 500ms ease forwards;
}

.sim-stat--final {
  color: #fff;
  margin-top: 0.25rem;
}

.sim-reflection-text strong { color: #fff; }
.sim-reflection-text em { color: rgba(255,255,255,0.45); font-style: normal; }

@keyframes simFadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Mobile overlay improvements */
@media (max-width: 600px) {
  .sim-overlay-topbar {
    padding: 0.5rem 0.9rem;
    flex-wrap: wrap;
    gap: 0.3rem;
  }

  .sim-overlay-upcount {
    order: 3;
    flex-basis: 100%;
    font-size: 0.7rem;
  }

  .sim-overlay-left {
    padding: 1.2rem 1rem;
    gap: 0.75rem;
    justify-content: flex-start;
    padding-top: 1.5rem;
  }

  .sim-no-signal svg {
    width: 56px;
    height: 56px;
  }

  .sim-overlay-headline {
    font-size: 0.82rem;
  }

  .sim-popup-zone {
    height: 90px;
  }

  .sim-err-popup {
    font-size: 0.78rem;
  }

  .sim-overlay-footer {
    padding: 0.85rem 1rem;
    gap: 0.75rem;
  }

  .sim-reflection-text {
    font-size: 0.8rem;
  }

  .sim-overlay-restore-btn {
    font-size: 0.8rem;
    padding: 0.6rem 1.1rem;
  }
}

.sim-overlay-restore-btn {
  background: transparent;
  border: 1px solid rgba(0, 255, 136, 0.5);
  color: #00ff88;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.6rem 1.6rem;
  border-radius: 0.5rem;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: background 200ms ease, box-shadow 200ms ease;
  animation: simFadeUp 400ms ease forwards;
}

.sim-overlay-restore-btn:hover {
  background: rgba(0, 255, 136, 0.1);
  box-shadow: 0 0 18px rgba(0, 255, 136, 0.3);
}

/* —— Section 9: Conclusion & Credits ——————————————————————— */
.credits-section {
  --section-seam-color: #1a090f;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 16% 22%, color-mix(in srgb, var(--color-success) 10%, transparent), transparent 32%),
    radial-gradient(circle at 85% 15%, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent 34%),
    linear-gradient(180deg, color-mix(in srgb, var(--color-bg) 86%, #061520), color-mix(in srgb, var(--color-bg) 96%, #030407));
}

.credits-layout {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 1.55rem;
}

.credits-heading {
  display: grid;
  gap: 0.85rem;
  max-width: 820px;
}

.credits-heading h2 {
  font-size: clamp(2rem, 5vw, 3.8rem);
  max-width: 13ch;
}

.credits-intro {
  color: var(--color-text-secondary);
  max-width: 64ch;
}

.credits-grid {
  display: grid;
  gap: 1.1rem;
}

.conclusion-card,
.credits-card {
  display: grid;
  gap: 0.95rem;
  align-content: start;
}

.conclusion-card h3,
.credits-card h3 {
  font-size: clamp(1.35rem, 3vw, 1.95rem);
}

.conclusion-cta {
  color: var(--color-success);
  font-weight: 600;
}

.conclusion-tips {
  list-style: none;
  display: grid;
  gap: 0.8rem;
}

.conclusion-tips li {
  display: grid;
  gap: 0.3rem;
  padding: 0.75rem 0.8rem;
  border-radius: 0.7rem;
  border: 1px solid color-mix(in srgb, var(--color-primary) 20%, transparent);
  background: color-mix(in srgb, var(--color-surface) 88%, transparent);
}

.tip-title {
  color: var(--color-text-primary);
  font-weight: 600;
}

.tip-copy {
  color: var(--color-text-secondary);
}

.credits-members {
  display: grid;
  gap: 0.55rem;
}

.credits-member-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px dashed color-mix(in srgb, var(--color-primary) 16%, transparent);
  padding-bottom: 0.45rem;
}

.credits-member-row dt {
  font-weight: 600;
}

.credits-member-row dd {
  color: var(--color-text-secondary);
  text-align: right;
}

.credits-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.2rem;
}

.credits-meta span {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  border: 1px solid color-mix(in srgb, var(--color-primary) 22%, transparent);
  border-radius: 999px;
  padding: 0.28rem 0.62rem;
  background: color-mix(in srgb, var(--color-bg) 24%, transparent);
}

.credits-footer-note {
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  text-align: center;
}

.credits-burst-layer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}

.conclusion-particle {
  position: absolute;
  width: var(--size, 8px);
  height: var(--size, 8px);
  border-radius: 2px;
  background: hsl(var(--hue, 190) 88% 60%);
  opacity: 0.92;
  transform: translate(-50%, -50%) rotate(0deg);
  animation: conclusionBurst 1100ms ease-out forwards;
}

@keyframes conclusionBurst {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.55) rotate(0deg);
  }
  10% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(calc(-50% + var(--dx, 0px)), calc(-50% + var(--dy, 0px))) rotate(var(--rot, 0deg));
  }
}

@media (min-width: 980px) {
  .credits-layout {
    gap: 1.8rem;
  }

  .credits-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1.2rem;
  }
}

@media (max-width: 767px) {
  .credits-member-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
  }

  .credits-member-row dd {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  /* Motion is intentionally forced on for this presentation build. */
}

.container {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

@media (max-width: 1023px) {
  .timeline-current {
    position: static;
    top: auto;
    width: 100%;
  }
}

@media (max-width: 767px) {
  section {
    min-height: auto;
    padding: 3.25rem 1rem;
    justify-content: flex-start;
  }

  section + section {
    margin-top: 0;
    padding-top: 3.25rem;
  }

  .section-transition {
    height: 0;
  }

  .section-transition::before {
    top: -0.85rem;
    height: clamp(1.35rem, 4.8vw, 2rem);
    filter: blur(5px);
    opacity: 0.74;
  }

  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .card {
    padding: 1.1rem;
  }

  .network-banner {
    top: calc(env(safe-area-inset-top, 0px) + 0.5rem);
    width: min(94vw, 42rem);
    font-size: 0.82rem;
  }

  #theme-toggle {
    top: calc(env(safe-area-inset-top, 0px) + 0.7rem);
    right: calc(env(safe-area-inset-right, 0px) + 0.7rem);
    width: 42px;
    height: 42px;
  }

  #hero {
    min-height: 100svh;
    padding: 1.25rem 1rem;
  }

  .hero-content {
    gap: 1rem;
  }

  .hero-members {
    font-size: 0.8rem;
    gap: 0.4rem;
  }

  .scroll-arrow {
    bottom: 1.15rem;
  }

  .timeline-track {
    padding-left: 1.05rem;
  }

  .timeline-track::before {
    left: 0.35rem;
  }

  .timeline-era {
    scroll-margin-top: 5rem;
    padding: 1.05rem 0.9rem 0.9rem 1.15rem;
  }

  .timeline-era::before {
    left: -0.18rem;
    width: 0.85rem;
    height: 0.85rem;
  }

  .impact-card,
  .impact-card-toggle,
  .impact-card-scene {
    min-height: 24rem;
  }

  .impact-card-face {
    gap: 1rem;
    padding: 1.05rem;
    overflow-y: auto;
  }

  .challenges-stage-shell {
    min-height: 32rem;
  }

  .challenge-card-copy h3 {
    font-size: clamp(1.45rem, 6.6vw, 2rem);
  }

  .future-layer-grid {
    opacity: 0.18;
  }

  .future-card-toggle,
  .timeline-card-toggle,
  .poll-option,
  .simulator-trigger,
  .btn-primary,
  .btn-secondary,
  .challenges-nav {
    min-height: 44px;
  }

  .poll-result-track {
    height: 0.72rem;
  }

  .poll-qr-link {
    overflow-wrap: anywhere;
  }

  .simulator-reflection-card {
    width: min(94vw, 40rem);
    padding: 1.1rem 1rem;
  }

  .simulator-reflection-card p {
    font-size: 0.98rem;
  }

  .credits-meta span {
    font-size: 0.78rem;
  }
}

@media (max-width: 420px) {
  .hero-title {
    font-size: clamp(1.75rem, 10vw, 2.35rem);
  }

  .timeline-card-toggle,
  .future-card-toggle {
    padding: 0.95rem 0.95rem 0.85rem;
  }

  .challenge-card {
    padding: 1rem;
  }

  .poll-vote-card h3,
  .poll-results-card h3,
  .conclusion-card h3,
  .credits-card h3 {
    font-size: 1.22rem;
  }
}

/* ── Utility: Card ──────────────────────────────────────────── */
.card {
  background-color: var(--color-surface);
  border-radius: 0.75rem;
  padding: 1.5rem;
  border: 1px solid color-mix(in srgb, var(--color-primary) 15%, transparent);
  transition:
    border-color var(--duration-hover) var(--easing),
    box-shadow   var(--duration-hover) var(--easing);
}

.card:hover {
  border-color: color-mix(in srgb, var(--color-primary) 40%, transparent);
  box-shadow: 0 0 20px color-mix(in srgb, var(--color-primary) 10%, transparent);
}

/* ── Utility: Buttons ───────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--color-primary);
  color: #0a0a0f;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition:
    box-shadow  var(--duration-hover) var(--easing),
    transform   var(--duration-hover) var(--easing),
    background-color var(--duration-hover) var(--easing);
}

.btn-primary:hover {
  box-shadow: 0 0 24px color-mix(in srgb, var(--color-primary) 60%, transparent);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: transparent;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  border: 1px solid var(--color-primary);
  cursor: pointer;
  text-decoration: none;
  transition:
    background-color var(--duration-hover) var(--easing),
    box-shadow       var(--duration-hover) var(--easing),
    transform        var(--duration-hover) var(--easing);
}

.btn-secondary:hover {
  background-color: color-mix(in srgb, var(--color-primary) 10%, transparent);
  box-shadow: 0 0 16px color-mix(in srgb, var(--color-primary) 30%, transparent);
  transform: translateY(-1px);
}

/* ── Utility: Section Label ─────────────────────────────────── */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
}

/* ── Utility: Glow Text ─────────────────────────────────────── */
.glow-text {
  text-shadow: 0 0 20px color-mix(in srgb, var(--color-primary) 60%, transparent);
  color: var(--color-primary);
}

/* ── Utility: Scroll Reveal ─────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity   var(--duration-reveal) var(--easing),
    transform var(--duration-reveal) var(--easing);
  transition-delay: var(--reveal-delay, 0ms);
}

/* ── Scroll Progress Bar ────────────────────────────────────── */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 9999;
  transition: width 100ms linear;
  pointer-events: none;
}

/* ── Navigation Dots ────────────────────────────────────────── */
#nav-dots {
  position: fixed;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 9000;
}

/* Hide on small screens — not enough room */
@media (max-width: 768px) {
  #nav-dots {
    display: none;
  }
}

.nav-dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1.5px solid var(--color-primary);
  background-color: transparent;
  cursor: pointer;
  transition:
    background-color var(--duration-hover) var(--easing),
    box-shadow       var(--duration-hover) var(--easing),
    transform        var(--duration-hover) var(--easing);
}

.nav-dot:hover,
.nav-dot.active {
  background-color: var(--color-primary);
  box-shadow: 0 0 10px color-mix(in srgb, var(--color-primary) 70%, transparent);
}

.nav-dot.active {
  transform: scale(1.3);
}

/* ── Theme Toggle Button ────────────────────────────────────── */
#theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-surface);
  border: 1.5px solid color-mix(in srgb, var(--color-primary) 40%, transparent);
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
  transition:
    box-shadow       var(--duration-hover) var(--easing),
    border-color     var(--duration-hover) var(--easing),
    background-color var(--duration-default) var(--easing);
}

#theme-toggle:hover {
  box-shadow: 0 0 16px color-mix(in srgb, var(--color-primary) 50%, transparent);
  border-color: var(--color-primary);
}

#theme-toggle svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}