:root {
  --bg: #070912;
  --bg-2: #0c111f;
  --shell-hi: rgba(26, 30, 46, 0.95);
  --shell-lo: rgba(11, 14, 26, 0.96);
  --line: rgba(154, 167, 199, 0.26);
  --text-main: #edf2ff;
  --text-soft: rgba(205, 214, 242, 0.82);
  --glow-c: #ff71ce;
  --glow-p: #01cdfe;
  --glow-c-rgb: 255, 113, 206;
  --glow-p-rgb: 1, 205, 254;
  --font-title: 'Orbitron', 'Public Sans', sans-serif;
  --font-body: 'Public Sans', sans-serif;
  --font-ui: 'Press Start 2P', monospace;
  --font-mono: 'Share Tech Mono', monospace;
  --font-matrix: 'Matrixtype', 'Share Tech Mono', monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  width: 100%;
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--text-main);
  font-family: var(--font-body);
  background:
    radial-gradient(120% 95% at 14% 0%, rgba(var(--glow-p-rgb), 0.03), transparent 56%),
    radial-gradient(100% 85% at 100% 100%, rgba(var(--glow-c-rgb), 0.025), transparent 62%),
    linear-gradient(160deg, var(--bg-2), var(--bg));
  overflow-x: hidden;
}

.noise,
.contour {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

.noise {
  opacity: 0.22;
  background:
    repeating-linear-gradient(
      0deg,
      rgba(0, 0, 0, 0.2) 0px,
      rgba(0, 0, 0, 0.2) 1px,
      transparent 1px,
      transparent 4px
    );
}

.contour {
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(var(--glow-c-rgb), 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--glow-c-rgb), 0.12) 1px, transparent 1px);
  background-size: 42px 42px;
}

.topbar {
  width: min(1100px, calc(100% - 2.2rem));
  margin: 1rem auto 0;
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.65rem 0.9rem;
  border-radius: 14px;
  border: 1px solid rgba(var(--glow-c-rgb), 0.2);
  background: linear-gradient(180deg, rgba(24, 28, 46, 0.86), rgba(10, 12, 22, 0.9));
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.brand {
  text-decoration: none;
  color: var(--text-main);
  display: inline-flex;
  gap: 0.6rem;
  align-items: center;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.lang-picker {
  margin-left: auto;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.24rem 0.44rem 0.24rem 0.62rem;
  border-radius: 16px;
  border: 1px solid rgba(var(--glow-c-rgb), 0.28);
  background: linear-gradient(180deg, rgba(10, 13, 23, 0.92), rgba(5, 7, 14, 0.95));
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 0 0 rgba(var(--glow-c-rgb), 0);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.lang-picker::after {
  content: '';
  position: absolute;
  right: 0.88rem;
  top: 50%;
  width: 0.52rem;
  height: 0.52rem;
  border-right: 2px solid rgba(var(--glow-c-rgb), 0.9);
  border-bottom: 2px solid rgba(var(--glow-c-rgb), 0.9);
  transform: translateY(-62%) rotate(45deg);
  filter: drop-shadow(0 0 4px rgba(var(--glow-c-rgb), 0.35));
  pointer-events: none;
}

.lang-picker:hover {
  border-color: rgba(var(--glow-c-rgb), 0.48);
  box-shadow: 0 0 14px rgba(var(--glow-c-rgb), 0.16);
}

.lang-picker:focus-within {
  border-color: rgba(var(--glow-p-rgb), 0.72);
  box-shadow:
    0 0 0 2px rgba(var(--glow-p-rgb), 0.2),
    0 0 14px rgba(var(--glow-p-rgb), 0.24);
}

.lang-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: rgba(200, 212, 242, 0.86);
  text-transform: uppercase;
}

.lang-select {
  min-width: 9rem;
  border-radius: 12px;
  border: 1px solid rgba(var(--glow-c-rgb), 0.22);
  padding: 0.38rem 2rem 0.38rem 0.62rem;
  background:
    linear-gradient(180deg, rgba(9, 12, 23, 0.88), rgba(4, 6, 13, 0.92)),
    rgba(7, 10, 18, 0.86);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

.lang-select::-ms-expand {
  display: none;
}

.lang-select:hover {
  border-color: rgba(var(--glow-c-rgb), 0.46);
}

.lang-select:focus-visible {
  outline: none;
  border-color: rgba(var(--glow-p-rgb), 0.72);
  box-shadow:
    0 0 0 1px rgba(var(--glow-p-rgb), 0.24),
    0 0 14px rgba(var(--glow-p-rgb), 0.2);
}

.lang-select option {
  background: #070912;
  color: var(--text-main);
  border-radius: 10px;
}

.lang-select:open {
  border-radius: 12px;
}

.shell {
  width: min(1100px, calc(100% - 2.2rem));
  margin: 1rem auto 0;
  padding: clamp(1.1rem, 3vw, 2rem);
  border-radius: 24px;
  border: 1px solid rgba(0, 0, 0, 0.65);
  background:
    radial-gradient(circle at 18% 8%, rgba(255, 255, 255, 0.06), transparent 35%),
    linear-gradient(150deg, var(--shell-hi), var(--shell-lo));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.09),
    inset 0 -1px 0 rgba(0, 0, 0, 0.3),
    0 30px 60px rgba(0, 0, 0, 0.44);
  position: relative;
  overflow: hidden;
}

.shell::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(100% 120% at 80% 10%, rgba(var(--glow-p-rgb), 0.012), transparent 58%),
    radial-gradient(80% 100% at 10% 90%, rgba(var(--glow-c-rgb), 0.018), transparent 68%);
}

.hero {
  position: relative;
  z-index: 1;
  border: 1px solid rgba(var(--glow-c-rgb), 0.2);
  border-radius: 16px;
  padding: clamp(1rem, 2.5vw, 1.4rem);
  background: linear-gradient(180deg, rgba(7, 12, 24, 0.8), rgba(5, 7, 14, 0.9));
}

.stamp {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-ui);
  font-size: 0.66rem;
  letter-spacing: 0.11em;
  color: rgba(var(--glow-c-rgb), 0.88);
  text-shadow: 0 0 8px rgba(var(--glow-c-rgb), 0.28);
  animation: stamp-glitch 4.8s steps(1, end) infinite;
}

.stamp::before {
  content: '';
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(var(--glow-c-rgb), 0.9);
  box-shadow: 0 0 10px rgba(var(--glow-c-rgb), 0.7);
}

.hero h1 {
  margin: 0.85rem 0 0;
  max-width: 16ch;
  font-family: var(--font-title);
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.02;
  background: linear-gradient(135deg, var(--glow-p) 0%, var(--text-main) 40%, var(--glow-c) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lead {
  margin: 0.9rem 0 0;
  max-width: 60ch;
  color: var(--text-soft);
  font-size: clamp(1rem, 1.8vw, 1.18rem);
}

.signal-panel {
  margin-top: 1rem;
  border: 1px solid rgba(var(--glow-c-rgb), 0.24);
  border-radius: 14px;
  padding: 0.8rem;
  background: linear-gradient(180deg, rgba(5, 8, 17, 0.9), rgba(3, 5, 12, 0.9));
}

.signal-label {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.6rem;
  letter-spacing: 0.09em;
  color: rgba(190, 205, 240, 0.8);
}

.signal-line {
  margin: 0.45rem 0 0;
  font-family: var(--font-matrix);
  font-size: clamp(1rem, 2.4vw, 1.3rem);
  color: rgba(var(--glow-c-rgb), 0.92);
  text-shadow: 0 0 10px rgba(var(--glow-c-rgb), 0.35);
}

.signal-stage {
  margin-top: 0.75rem;
  height: clamp(130px, 20vw, 180px);
  border-radius: 10px;
  border: 1px solid rgba(var(--glow-c-rgb), 0.2);
  background: linear-gradient(180deg, rgba(2, 4, 10, 0.96), rgba(0, 1, 5, 0.98));
  position: relative;
  overflow: hidden;
}

#signal-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 30%, rgba(var(--glow-c-rgb), 0.048), transparent 62%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.22), rgba(0, 0, 0, 0.42));
  mix-blend-mode: screen;
  opacity: 0.75;
}

.actions {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.72rem 1.2rem;
  border: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  cursor: pointer;
  will-change: transform;
  transition: transform 250ms ease-out,
              box-shadow 250ms ease-out,
              border-color 200ms ease,
              filter 200ms ease;
}

.btn-primary {
  color: #f7ffff;
  border-color: rgba(var(--glow-c-rgb), 0.45);
  background: linear-gradient(160deg, rgba(var(--glow-p-rgb), 0.8), rgba(var(--glow-c-rgb), 0.65));
  box-shadow: 0 12px 20px rgba(0, 0, 0, 0.38), 0 0 16px rgba(var(--glow-c-rgb), 0.28);
}

.btn-ghost {
  color: rgba(218, 226, 247, 0.9);
  border-color: rgba(155, 168, 201, 0.35);
  background: rgba(6, 9, 18, 0.68);
}

.btn:hover {
  transform: translateY(-3px) scale(1.03);
}

.btn-primary:hover {
  box-shadow:
    0 16px 32px rgba(0, 0, 0, 0.42),
    0 0 24px rgba(var(--glow-c-rgb), 0.38),
    0 0 48px rgba(var(--glow-c-rgb), 0.15);
  border-color: rgba(var(--glow-c-rgb), 0.7);
  filter: brightness(1.12);
}

.btn-ghost:hover {
  border-color: rgba(var(--glow-c-rgb), 0.4);
  box-shadow: 0 0 14px rgba(var(--glow-c-rgb), 0.15);
}

.btn:active {
  transform: translateY(1px) scale(0.97);
  transition-duration: 80ms;
}

.btn-primary:active {
  box-shadow:
    0 4px 10px rgba(0, 0, 0, 0.5),
    0 0 12px rgba(var(--glow-c-rgb), 0.4);
  filter: brightness(1.2);
}

.btn-ghost:active {
  box-shadow: 0 0 8px rgba(var(--glow-c-rgb), 0.25);
}

.hints {
  position: relative;
  z-index: 1;
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.72rem;
}

.section-label {
  margin: 0 0 0.2rem;
  grid-column: 1 / -1;
  font-family: var(--font-ui);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  color: rgba(var(--glow-c-rgb), 0.86);
}

.hint-card {
  border: 1px solid rgba(var(--glow-c-rgb), 0.18);
  border-radius: 14px;
  padding: 0.95rem;
  background: linear-gradient(180deg, rgba(8, 12, 23, 0.78), rgba(4, 6, 12, 0.88));
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.hint-card:hover {
  transform: translateY(-3px);
  border-color: rgba(var(--glow-c-rgb), 0.45);
  box-shadow:
    0 0 12px rgba(var(--glow-c-rgb), 0.15),
    0 14px 28px rgba(0, 0, 0, 0.3);
}

.hint-tag {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  color: rgba(var(--glow-c-rgb), 0.82);
}

.hint-card h2 {
  margin: 0.5rem 0 0;
  font-family: var(--font-title);
  font-size: clamp(1.1rem, 2.2vw, 1.5rem);
  line-height: 1.2;
}

.hint-card h2.redacted {
  font-family: var(--font-matrix);
  color: rgba(var(--glow-c-rgb), 0.7);
  text-shadow: 0 0 6px rgba(var(--glow-c-rgb), 0.25);
  letter-spacing: 0.08em;
  user-select: none;
}

.hint-card p {
  margin: 0.55rem 0 0;
  color: var(--text-soft);
}

.spec-line {
  margin: 0.42rem 0 0;
  color: rgba(210, 220, 244, 0.83);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.35;
}

.formats {
  position: relative;
  z-index: 1;
  margin-top: 0.85rem;
}

.formats-inline {
  margin-bottom: 0.7rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid rgba(var(--glow-c-rgb), 0.14);
}

.formats-inline .section-label {
  margin: 0;
  font-size: 0.72rem;
}

.formats-inline .formats-row {
  margin-top: 0.45rem;
}

.formats-row {
  margin-top: 0.55rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.format-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border-radius: 999px;
  padding: 0.5rem 0.82rem;
  border: 1px solid rgba(var(--glow-c-rgb), 0.3);
  background: linear-gradient(180deg, rgba(11, 15, 28, 0.84), rgba(5, 7, 14, 0.92));
  color: rgba(var(--glow-c-rgb), 0.92);
  font-family: var(--font-ui);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  transition: transform 140ms ease, box-shadow 180ms ease, border-color 180ms ease, color 180ms ease;
  will-change: transform;
}

.format-badge::before {
  content: '';
  position: absolute;
  top: -65%;
  left: -120%;
  width: 62%;
  height: 230%;
  border-radius: 999px;
  pointer-events: none;
  opacity: 0;
  transform: skewX(-24deg) translateX(0);
  background: linear-gradient(
    115deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.06) 36%,
    rgba(255, 255, 255, 0.56) 49%,
    rgba(255, 255, 255, 0.1) 62%,
    rgba(255, 255, 255, 0) 100%
  );
  box-shadow:
    0 0 10px rgba(var(--glow-c-rgb), 0.22),
    0 0 14px rgba(var(--glow-p-rgb), 0.16);
}

.format-badge:hover {
  transform: translateY(-2px) scale(1.06);
  box-shadow:
    0 0 10px rgba(var(--glow-c-rgb), 0.22),
    0 0 18px rgba(var(--glow-c-rgb), 0.14),
    0 6px 14px rgba(0, 0, 0, 0.3);
}

.format-badge.boot-hover {
  animation: badge-boot-breathe 1400ms ease-in-out 1;
}

.format-badge:hover::before {
  animation: badge-shine 620ms ease-out 1;
}

.format-badge.boot-hover::before {
  animation: none;
  opacity: 0;
}

.format-badge:focus-visible {
  transform: translateY(-2px) scale(1.06);
  box-shadow:
    0 0 10px rgba(var(--glow-c-rgb), 0.22),
    0 0 18px rgba(var(--glow-c-rgb), 0.14),
    0 6px 14px rgba(0, 0, 0, 0.3);
  outline: none;
}

.format-badge:focus-visible::before {
  animation: badge-shine 620ms ease-out 1;
}

.status-grid {
  position: relative;
  z-index: 1;
  margin-top: 0.95rem;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.6rem;
}

.status-item {
  border-radius: 10px;
  border: 1px solid rgba(146, 160, 195, 0.24);
  padding: 0.7rem;
  background: linear-gradient(180deg, rgba(4, 5, 12, 0.94), rgba(1, 2, 6, 0.97));
  display: grid;
  gap: 0.3rem;
}

.status-key {
  font-family: var(--font-ui);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  color: rgba(197, 208, 241, 0.78);
}

.status-val {
  position: relative;
  display: inline-block;
  min-width: 8ch;
  white-space: nowrap;
  font-family: var(--font-matrix);
  font-size: 1.1rem;
  color: rgba(var(--glow-c-rgb), 0.94);
  text-shadow: 0 0 10px rgba(var(--glow-c-rgb), 0.3);
}

.status-val::after {
  content: '_';
  margin-left: 1px;
  color: rgba(var(--glow-c-rgb), 0.9);
  animation: tw-cursor 1s steps(1, end) infinite;
}

.status-item:nth-child(1) .status-val::after { animation-duration: 0.8s; }
.status-item:nth-child(2) .status-val::after { animation-duration: 1.15s; }
.status-item:nth-child(3) .status-val::after { animation-duration: 0.65s; }
.status-item:nth-child(4) .status-val::after { animation-duration: 1.4s; }
.status-item:nth-child(5) .status-val::after { animation-duration: 0.95s;
}

.status-val.alert {
  color: rgba(255, 112, 112, 0.98);
  text-shadow: 0 0 10px rgba(255, 90, 90, 0.42);
}

.status-val.alert::after {
  color: rgba(255, 112, 112, 0.98);
}

.footer {
  width: min(1100px, calc(100% - 2.2rem));
  margin: 0.9rem auto 1.3rem;
  min-height: 58px;
  border-radius: 12px;
  border: 1px solid rgba(var(--glow-c-rgb), 0.17);
  background: linear-gradient(180deg, rgba(13, 16, 30, 0.9), rgba(6, 8, 14, 0.9));
  display: grid;
  grid-template-columns: 1fr auto 1fr auto;
  gap: 0.7rem;
  align-items: center;
  padding: 0.6rem 0.85rem;
}

.footer p {
  margin: 0;
  font-family: var(--font-mono);
  color: rgba(200, 212, 242, 0.86);
  font-size: 0.88rem;
}

.footer p:first-child {
  font-family: var(--font-ui);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
}

.footer p:last-child {
  text-align: right;
}

@keyframes tw-cursor {
  0%, 49% {
    opacity: 1;
  }
  50%, 100% {
    opacity: 0;
  }
}

@keyframes stamp-glitch {
  0%, 46%, 100% {
    transform: translateX(0);
    text-shadow: 0 0 8px rgba(var(--glow-c-rgb), 0.28);
    filter: none;
  }
  47% {
    transform: translateX(-1px);
    text-shadow:
      1px 0 rgba(255, 112, 112, 0.92),
      -1px 0 rgba(120, 220, 255, 0.92),
      0 0 10px rgba(var(--glow-c-rgb), 0.34);
    filter: saturate(1.18);
  }
  48% {
    transform: translateX(1px);
    text-shadow:
      -1px 0 rgba(255, 112, 112, 0.86),
      1px 0 rgba(120, 220, 255, 0.86),
      0 0 8px rgba(var(--glow-c-rgb), 0.3);
  }
  49% {
    transform: translateX(0);
    text-shadow: 0 0 8px rgba(var(--glow-c-rgb), 0.28);
    filter: none;
  }
}

@keyframes badge-shine {
  0% {
    opacity: 0;
    transform: skewX(-24deg) translateX(0);
  }
  18% {
    opacity: 0.85;
  }
  100% {
    opacity: 0;
    transform: skewX(-24deg) translateX(420%);
  }
}

@keyframes badge-boot-breathe {
  0% {
    border-color: rgba(var(--glow-c-rgb), 0.32);
    color: rgba(var(--glow-c-rgb), 0.92);
    text-shadow: 0 0 3px rgba(var(--glow-c-rgb), 0.2);
    box-shadow:
      0 0 0 rgba(var(--glow-c-rgb), 0),
      0 0 0 rgba(var(--glow-c-rgb), 0);
    transform: translateY(0);
  }
  50% {
    border-color: rgba(var(--glow-c-rgb), 0.62);
    color: rgba(var(--glow-c-rgb), 0.98);
    text-shadow: 0 0 8px rgba(var(--glow-c-rgb), 0.48);
    box-shadow:
      0 0 9px rgba(var(--glow-c-rgb), 0.26),
      0 0 18px rgba(var(--glow-c-rgb), 0.2);
    transform: translateY(-0.5px);
  }
  100% {
    border-color: rgba(var(--glow-c-rgb), 0.32);
    color: rgba(var(--glow-c-rgb), 0.92);
    text-shadow: 0 0 3px rgba(var(--glow-c-rgb), 0.2);
    box-shadow:
      0 0 0 rgba(var(--glow-c-rgb), 0),
      0 0 0 rgba(var(--glow-c-rgb), 0);
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .hints {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .topbar,
  .shell,
  .footer {
    width: calc(100% - 1.1rem);
  }

  .topbar {
    padding: 0.62rem 0.72rem;
  }

  .lang-picker {
    padding: 0.2rem 0.36rem 0.2rem 0.5rem;
  }

  .lang-picker::after {
    right: 0.72rem;
    width: 0.46rem;
    height: 0.46rem;
  }

  .lang-label {
    font-size: 0.68rem;
  }

  .lang-select {
    min-width: 7.7rem;
    font-size: 0.72rem;
    padding: 0.34rem 1.75rem 0.34rem 0.52rem;
  }

  .hero h1 {
    max-width: none;
  }

  .actions {
    flex-direction: column;
  }

  .actions .btn {
    width: 100%;
  }

  .status-grid {
    grid-template-columns: 1fr;
  }

  .footer {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer p:last-child {
    text-align: center;
  }

  .footer-social {
    justify-content: center;
  }
}

/* --- Skip-to-content link --- */

.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 999;
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  background: var(--glow-p);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  opacity: 0;
  transition: top 180ms ease, opacity 180ms ease;
}

.skip-link:focus {
  top: 1rem;
  opacity: 1;
}

/* --- Loading reveal --- */

body.is-loading .topbar,
body.is-loading .shell,
body.is-loading .footer {
  opacity: 0;
  transform: translateY(16px);
}

body:not(.is-loading) .topbar,
body:not(.is-loading) .shell,
body:not(.is-loading) .footer {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 600ms ease, transform 600ms ease;
}

body:not(.is-loading) .shell {
  transition-delay: 120ms;
}

body:not(.is-loading) .footer {
  transition-delay: 220ms;
}

/* --- Scroll reveal --- */

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 550ms ease, transform 550ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger hint cards within revealed section */
.hints.is-visible .hint-card {
  opacity: 0;
  transform: translateY(18px);
  animation: card-reveal 500ms ease forwards;
}

.hints.is-visible .hint-card:nth-child(2) { animation-delay: 80ms; }
.hints.is-visible .hint-card:nth-child(3) { animation-delay: 160ms; }
.hints.is-visible .hint-card:nth-child(4) { animation-delay: 240ms; }
.hints.is-visible .hint-card:nth-child(5) { animation-delay: 320ms; }

@keyframes card-reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Footer social links --- */

.footer-social {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  justify-content: center;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid rgba(var(--glow-c-rgb), 0.2);
  background: rgba(6, 9, 18, 0.6);
  color: rgba(200, 212, 242, 0.72);
  text-decoration: none;
  transition: border-color 180ms ease, color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.social-link:hover {
  color: rgba(var(--glow-c-rgb), 0.95);
  border-color: rgba(var(--glow-c-rgb), 0.5);
  box-shadow: 0 0 10px rgba(var(--glow-c-rgb), 0.2);
  transform: translateY(-1px);
}

/* --- Parallax signal stage --- */

.signal-stage {
  will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .hints.is-visible .hint-card {
    opacity: 1;
    transform: none;
    animation: none;
  }

  body.is-loading .topbar,
  body.is-loading .shell,
  body.is-loading .footer {
    opacity: 1;
    transform: none;
  }
}