:root {
  color-scheme: dark;
  --bg: #0d111d;
  --text: #f7eadb;
  --muted: #c0b2ad;
  --accent: #e8b06e;
  --accent-ink: #1b1210;
  --glow: #5d769c;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 0%, rgba(73, 103, 145, 0.34), transparent 32rem),
    radial-gradient(circle at 100% 100%, rgba(154, 74, 54, 0.2), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button {
  font: inherit;
}

.app-shell {
  position: relative;
  width: 100%;
  height: 100dvh;
  min-height: 100dvh;
  margin: 0 auto;
  overflow: hidden;
  background: #080c16;
  box-shadow: 0 0 80px rgba(0, 0, 0, 0.45);
}

.stage {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  width: 100%;
  height: 100%;
  background: rgba(8, 12, 22, 0.5);
  isolation: isolate;
}

.stage::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 36px 36px;
  content: "";
  mask-image: linear-gradient(to bottom, transparent, black 18%, black 82%, transparent);
}

.stage-glow {
  position: absolute;
  width: 60%;
  height: 40%;
  border-radius: 50%;
  background: var(--glow);
  filter: blur(100px);
  opacity: 0.18;
  pointer-events: none;
}

.image-wrap {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
}

.image-wrap img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  -webkit-user-drag: none;
}

.image-wrap.is-changing img {
  animation: arrive 780ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

#particleCanvas {
  position: absolute;
  inset: 0;
  z-index: 3;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.motion-intro {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 7;
  display: grid;
  gap: 4px;
  min-width: 210px;
  padding: 17px 22px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 18px;
  background: rgba(6, 6, 18, 0.48);
  color: var(--text);
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition: opacity 260ms ease, visibility 260ms ease, background 180ms ease;
  backdrop-filter: blur(14px);
  -webkit-tap-highlight-color: transparent;
}

.motion-intro:hover {
  background: rgba(32, 27, 37, 0.72);
}

.motion-intro:focus-visible,
.desktop-shake:focus-visible {
  outline: 3px solid rgba(232, 176, 110, 0.55);
  outline-offset: 3px;
}

.motion-intro.is-hidden {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.motion-intro-title {
  font-size: 17px;
  font-weight: 800;
}

.motion-intro-subtitle {
  color: rgba(247, 234, 219, 0.66);
  font-size: 12px;
}

.desktop-shake {
  position: absolute;
  right: 50%;
  bottom: 20px;
  z-index: 8;
  min-width: 120px;
  padding: 11px 22px;
  display: block;
  border: 1px solid rgba(232, 176, 110, 0.55);
  border-radius: 999px;
  background: rgba(6, 6, 18, 0.62);
  color: var(--accent);
  cursor: pointer;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: lowercase;
  transform: translateX(50%);
  backdrop-filter: blur(14px);
}

.desktop-shake:hover {
  background: var(--accent);
  color: var(--accent-ink);
}

@keyframes arrive {
  from {
    opacity: 0;
    transform: scale(0.84) rotate(-2deg);
    filter: blur(5px);
  }
  to {
    opacity: 1;
    transform: scale(1) rotate(0);
    filter: blur(0);
  }
}

@media (max-width: 600px) {
  .desktop-shake {
    bottom: max(20px, env(safe-area-inset-bottom));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}