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

html {
  /* Фон задаём только на html. Если задать его ещё и на body, блочный бокс
     body отрисуется ПОВЕРХ #bg-video с z-index: -2, и видео станет не видно. */
  background: #0b0b12;
}

body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: transparent;
  font-family: 'Poppins', system-ui, -apple-system, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
}

#bg-video {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  pointer-events: none;
}

/* Фолбэк-градиент, если видео не загрузилось */
/* Градиент рисуем на html — на body он перекрыл бы видео */
html:has(body.video-failed) {
  background:
    radial-gradient(60% 60% at 30% 20%, rgba(90, 60, 160, 0.55), transparent 70%),
    radial-gradient(50% 50% at 75% 80%, rgba(26, 60, 110, 0.5), transparent 70%),
    #0b0b12;
}

body.video-failed #bg-video {
  display: none;
}

/* ---------- Стартовый экран ---------- */

#start-screen {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  border: 0;
  padding: 24px;
  background: #000;
  color: #fff;
  font: inherit;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.4s ease, opacity 0.4s ease;
}

#start-screen:hover {
  background: #08080c;
}

#start-screen .start-title {
  font-size: clamp(22px, 6vw, 34px);
  font-weight: 600;
  letter-spacing: 0.01em;
}

#start-screen .start-hint {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  animation: pulse 2.2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* ---------- Контент ---------- */

.content {
  position: fixed;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

.content[hidden] {
  display: none;
}

@keyframes slide-up {
  from {
    transform: translateY(28px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.card {
  position: relative;
  width: min(450px, 100%);
  max-width: 100%;
  padding: clamp(28px, 7vw, 60px) clamp(20px, 6vw, 40px);
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 15px;
  text-align: center;
  box-shadow:
    0 0 20px rgba(255, 255, 255, 0.1),
    0 0 40px rgba(255, 255, 255, 0.01);
}

.content.is-visible .card {
  animation: slide-up 0.7s ease-out both;
}

.avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 15px;
  border: 2px solid rgba(255, 255, 255, 0.25);
}

.nickname {
  margin: 10px 0 5px;
  font-size: 24px;
  color: #222;
  font-weight: 600;
}

.description {
  margin: 0;
  font-size: 16px;
  color: #444;
}

.card-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

.icon-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.icon-button img {
  width: 40px;
  height: 40px;
}

.icon-button:hover,
.icon-button:focus-visible {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.1);
}

/* ---------- Счётчик просмотров ---------- */

.card-notification {
  position: absolute;
  bottom: 15px;
  left: 15px;
  width: 27px;
  height: 27px;
  cursor: default;
}

.card-notification img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.card-notification .bubble {
  position: absolute;
  top: -20px;
  right: -18px;
  background-color: #000;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 3px 7px;
  border-radius: 50px;
  opacity: 0;
  transform: scale(0.8);
  transform-origin: center;
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
}

.card-notification:hover .bubble,
.card-notification:focus-within .bubble {
  opacity: 1;
  transform: scale(1);
}

/* На тач-устройствах нет ховера — показываем счётчик сразу */
@media (hover: none) {
  .card-notification .bubble {
    opacity: 1;
    transform: scale(1);
  }
}

/* ---------- Кнопка звука ---------- */

.sound-toggle {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #fff;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.sound-toggle:hover {
  background: rgba(0, 0, 0, 0.65);
  transform: scale(1.06);
}

.sound-toggle .sound-off {
  display: none;
}

.sound-toggle[aria-pressed='false'] .sound-on {
  display: none;
}

.sound-toggle[aria-pressed='false'] .sound-off {
  display: block;
}

/* ---------- Диагностика (?debug=1) ---------- */

.debug-panel {
  position: fixed;
  left: 8px;
  bottom: 8px;
  z-index: 999;
  max-width: min(92vw, 460px);
  max-height: 46vh;
  overflow: auto;
  margin: 0;
  padding: 10px 12px;
  border: 1px solid #3d4a6b;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.88);
  color: #b9ffb9;
  font: 12px/1.45 ui-monospace, SFMono-Regular, Consolas, monospace;
  white-space: pre-wrap;
  word-break: break-word;
  text-align: left;
}

/* ---------- Фокус и доступность ---------- */

:focus-visible {
  outline: 2px solid #7aa2ff;
  outline-offset: 3px;
}

.noscript {
  position: fixed;
  inset: auto 0 40% 0;
  z-index: 20;
  margin: 0;
  color: #fff;
  text-align: center;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}