:root {
  --bg: rgba(0, 0, 0, 0.0);
  --text: #ffffff;
  --accent: #7dd3fc;
  --shadow: rgba(0, 0, 0, 0.35);
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu,
    Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol";
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
}

.app {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.intro-container {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: transparent;
  z-index: 5;
  opacity: 0;
  transform: scale(1.02);
  transition: opacity 250ms ease, transform 250ms ease;
}

.intro-container.show {
  opacity: 1;
  transform: scale(1);
}

.intro-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.message-container {
  max-width: min(90vw, 900px);
  padding: 14px 18px;
  border-radius: 12px;
  background: rgba(17, 24, 39, 0.85);
  box-shadow: 0 10px 30px var(--shadow);
  border: 1px solid rgba(125, 211, 252, 0.25);
  transform: translateY(20px);
  opacity: 0;
  transition: opacity 300ms ease, transform 300ms ease;
}

.message-container.show {
  transform: translateY(0);
  opacity: 1;
}

.message {
  font-size: clamp(18px, 4.2vw, 36px);
  line-height: 1.3;
}

.debug {
  position: absolute;
  bottom: 8px;
  left: 8px;
  font: 12px/1.3 monospace;
  color: #94a3b8;
}

.hidden { display: none; }