:root {
  --bg: #0f0f0f;
  --ink: #1f1f1f;
  --paper: #f4f1ea;
  --glass: rgba(244, 241, 234, 0.18);
  --glass-strong: rgba(244, 241, 234, 0.34);
  --shadow: rgba(0, 0, 0, 0.26);
  --blur: 18px;
  --icon-size: 24px;
  --dock-gap: 14px;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "Segoe UI", sans-serif;
}

button {
  border: 0;
  padding: 0;
  font: inherit;
  color: inherit;
  background: transparent;
  cursor: pointer;
}

.landing {
  position: relative;
  width: 100vw;
  min-height: 100svh;
  isolation: isolate;
  overflow: hidden;
  background: var(--bg);
}

.landing__image {
  position: absolute;
  inset: 0;
  z-index: -3;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  user-select: none;
  pointer-events: none;
}

.landing__shade {
  position: absolute;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 42%, rgba(255, 255, 255, 0.03), transparent 42%),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0.30)),
    linear-gradient(to right, rgba(0, 0, 0, 0.12), transparent 35%, rgba(0, 0, 0, 0.16));
}

.icon-dock {
  position: fixed;
  left: 50%;
  bottom: max(28px, env(safe-area-inset-bottom));
  display: flex;
  gap: var(--dock-gap);
  align-items: center;
  justify-content: center;
  padding: 12px 14px;
  border: 1px solid rgba(31, 31, 31, 0.12);
  border-radius: 999px;
  background: var(--glass);
  box-shadow: 0 18px 50px var(--shadow);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  transform: translateX(-50%);
}

.icon-button,
.scroll-cue {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 999px;
  background: rgba(244, 241, 234, 0.16);
  transition:
    transform 180ms ease,
    background 180ms ease,
    opacity 180ms ease;
}

.icon-button img,
.scroll-cue img {
  width: var(--icon-size);
  height: var(--icon-size);
  display: block;
  opacity: 0.84;
}

.icon-button:hover,
.icon-button:focus-visible,
.scroll-cue:hover,
.scroll-cue:focus-visible {
  background: var(--glass-strong);
  transform: translateY(-2px);
  outline: none;
}

.icon-button:active,
.scroll-cue:active {
  transform: translateY(0) scale(0.96);
}

.scroll-cue {
  position: fixed;
  right: max(26px, env(safe-area-inset-right));
  bottom: max(30px, env(safe-area-inset-bottom));
  background: rgba(244, 241, 234, 0.12);
  box-shadow: 0 18px 50px var(--shadow);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
}

@media (max-width: 760px) {
  :root {
    --icon-size: 22px;
    --dock-gap: 8px;
  }

  .landing__image {
    object-position: 48% center;
  }

  .icon-dock {
    width: calc(100vw - 32px);
    justify-content: space-between;
    padding: 10px;
  }

  .icon-button,
  .scroll-cue {
    width: 44px;
    height: 44px;
  }

  .scroll-cue {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .icon-button,
  .scroll-cue {
    transition: none;
  }
}