/* MegaLightning — static CSS (no build step) */

:root {
  --color-bg: #07060c;
  --color-surface: #12101a;
  --color-fg: #f3efe6;
  --color-muted: #9a93a8;
  --color-primary: #c9a227;
  --color-accent: #8b1e2d;
  --color-indigo: #1a1630;
  --color-mist: #c8c2d8;
  --color-border: #2a2438;
  --radius: 0.5rem;
  --font-display: "Cormorant Garamond", "Noto Serif JP", Georgia, serif;
  --font-sans: "Zen Kaku Gothic New", "Noto Sans JP", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-fg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

button:not(:disabled),
[role="button"]:not(:disabled) {
  cursor: pointer;
}

::selection {
  background: color-mix(in oklab, var(--color-primary) 40%, transparent);
  color: var(--color-fg);
}

/* ── Slow image motion ───────────────────────────────────────── */

@keyframes ken-a {
  0% {
    transform: scale(1.08) translate3d(-1.5%, -1%, 0);
  }
  50% {
    transform: scale(1.16) translate3d(1.5%, 1.2%, 0);
  }
  100% {
    transform: scale(1.08) translate3d(-1.5%, -1%, 0);
  }
}

@keyframes ken-b {
  0% {
    transform: scale(1.12) translate3d(1.8%, 0.5%, 0);
  }
  50% {
    transform: scale(1.05) translate3d(-1.2%, -1.5%, 0);
  }
  100% {
    transform: scale(1.12) translate3d(1.8%, 0.5%, 0);
  }
}

@keyframes ken-c {
  0% {
    transform: scale(1.1) translate3d(0%, 1.5%, 0);
  }
  50% {
    transform: scale(1.18) translate3d(-1%, -0.8%, 0);
  }
  100% {
    transform: scale(1.1) translate3d(0%, 1.5%, 0);
  }
}

@keyframes float-mist {
  0% {
    transform: translate3d(-4%, 0, 0);
    opacity: 0.35;
  }
  50% {
    transform: translate3d(4%, -2%, 0);
    opacity: 0.55;
  }
  100% {
    transform: translate3d(-4%, 0, 0);
    opacity: 0.35;
  }
}

@keyframes drift-lantern {
  0% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(0, -18px, 0);
  }
  100% {
    transform: translate3d(0, 0, 0);
  }
}

@keyframes pulse-glow {
  0%,
  100% {
    opacity: 0.4;
  }
  50% {
    opacity: 0.75;
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes grain {
  0%,
  100% {
    transform: translate(0, 0);
  }
  10% {
    transform: translate(-2%, -1%);
  }
  30% {
    transform: translate(1%, 2%);
  }
  50% {
    transform: translate(-1%, 3%);
  }
  70% {
    transform: translate(3%, -2%);
  }
  90% {
    transform: translate(-2%, 1%);
  }
}

.ken-a {
  animation: ken-a 55s ease-in-out infinite;
}
.ken-b {
  animation: ken-b 70s ease-in-out infinite;
}
.ken-c {
  animation: ken-c 62s ease-in-out infinite;
}

.mist-layer {
  animation: float-mist 40s ease-in-out infinite;
}

.lantern-drift {
  animation: drift-lantern 12s ease-in-out infinite;
}

.glow-pulse {
  animation: pulse-glow 8s ease-in-out infinite;
}

.panel-enter {
  animation: fade-up 1.2s ease-out both;
}

.film-grain {
  pointer-events: none;
  position: fixed;
  inset: -50%;
  width: 200%;
  height: 200%;
  z-index: 50;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.2s steps(2) infinite;
  mix-blend-mode: overlay;
}

@media (prefers-reduced-motion: reduce) {
  .ken-a,
  .ken-b,
  .ken-c,
  .mist-layer,
  .lantern-drift,
  .glow-pulse,
  .film-grain {
    animation: none !important;
  }
}

/* panel layout */
.story-panel {
  position: relative;
  min-height: 100dvh;
  width: 100%;
  overflow: hidden;
  display: grid;
  place-items: center;
}

.story-panel__media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.story-panel__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  will-change: transform;
  display: block;
}

.story-panel__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      to top,
      color-mix(in oklab, var(--color-bg) 78%, transparent) 0%,
      transparent 42%,
      color-mix(in oklab, var(--color-bg) 35%, transparent) 100%
    ),
    radial-gradient(
      ellipse at 50% 70%,
      transparent 30%,
      color-mix(in oklab, var(--color-bg) 55%, transparent) 100%
    );
  pointer-events: none;
}

.story-panel__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 1.5rem;
  max-width: 36rem;
}

.mark {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: 0.35em;
  text-indent: 0.35em;
  color: var(--color-primary);
  font-size: 0.75rem;
  text-transform: uppercase;
  margin: 0;
}

.mark-jp {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-indent: 0.2em;
  color: var(--color-fg);
  line-height: 1.2;
  text-shadow: 0 2px 24px color-mix(in oklab, var(--color-bg) 80%, transparent);
  margin: 0;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  pointer-events: none;
}

.site-header a,
.site-header span {
  pointer-events: auto;
}

.logo {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.28em;
  text-indent: 0.28em;
  color: var(--color-fg);
  text-decoration: none;
  opacity: 0.9;
  mix-blend-mode: difference;
}

.cta-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-bg);
  background: var(--color-primary);
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  text-decoration: none;
  transition:
    transform 200ms ease,
    background 200ms ease,
    box-shadow 200ms ease;
  box-shadow: 0 8px 32px color-mix(in oklab, var(--color-primary) 35%, transparent);
}

.cta-link:hover {
  transform: translateY(-2px);
  background: color-mix(in oklab, var(--color-primary) 90%, white);
  box-shadow: 0 12px 40px color-mix(in oklab, var(--color-primary) 45%, transparent);
}

.ghost-link {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-mist);
  text-decoration: none;
  border: 1px solid color-mix(in oklab, var(--color-mist) 35%, transparent);
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  background: color-mix(in oklab, var(--color-bg) 40%, transparent);
  transition:
    color 200ms ease,
    border-color 200ms ease;
}

.ghost-link:hover {
  color: var(--color-fg);
  border-color: color-mix(in oklab, var(--color-primary) 60%, transparent);
}

.scroll-hint {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  font-size: 0.6rem;
  letter-spacing: 0.35em;
  text-indent: 0.35em;
  color: var(--color-mist);
  opacity: 0.7;
  margin: 0;
}

.divider-line {
  width: 2px;
  height: 2.5rem;
  margin: 0.75rem auto 0;
  background: linear-gradient(
    to bottom,
    transparent,
    var(--color-primary),
    transparent
  );
  opacity: 0.7;
}

.finale {
  background: radial-gradient(
    ellipse at 50% 40%,
    #1a1630 0%,
    var(--color-bg) 70%
  );
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 3rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.finale-portrait {
  width: min(280px, 70vw);
  aspect-ratio: 3 / 4;
  border-radius: 0.25rem;
  overflow: hidden;
  box-shadow:
    0 0 0 1px color-mix(in oklab, var(--color-primary) 35%, transparent),
    0 24px 80px color-mix(in oklab, var(--color-bg) 90%, transparent);
}

.finale-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: ken-c 80s ease-in-out infinite;
}

.site-footer {
  padding: 2rem 1.25rem 2.5rem;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.site-footer a {
  color: var(--color-primary);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

.mist-layer {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}