:root {
  font-family: "Space Grotesk", system-ui, -apple-system, sans-serif;
  color-scheme: dark;
  --bg-dark: #050505;
  --bg-highlight: linear-gradient(120deg, rgba(15, 15, 15, 0.9), rgba(0, 0, 0, 0.85));
  --accent: #d0d0d0;
  --accent-2: #f5f5f5;
  --text-soft: rgba(255, 255, 255, 0.78);
  --text-muted: rgba(255, 255, 255, 0.5);
}

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-dark);
  overflow: hidden;
  color: #fff;
}

.bg-layer {
  position: fixed;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: opacity 1s ease, filter 1s ease;
  will-change: opacity, filter;
}

.bg-layer--intro {
  background-image: url("https://cdn-images.dzcdn.net/images/cover/089c2934b4d0f19cb3be205745b79440/0x1900-000000-80-0-0.jpg");
  filter: grayscale(1) contrast(1.1) brightness(0.45);
  z-index: -2;
}

.bg-layer--crystals {
  z-index: -1;
  opacity: 0;
  background: radial-gradient(circle at 15% 25%, rgba(255, 255, 255, 0.08), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(150, 150, 150, 0.07), transparent 45%),
    #010101;
}

#crystalCanvas {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.6));
}

.scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.06) 1px,
    transparent 1px
  );
  background-size: 100% 3px;
  mix-blend-mode: screen;
  opacity: 0.4;
}

.veil {
  position: fixed;
  inset: 0;
  background: rgba(5, 5, 5, 0.4);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  color: #fff;
  border: none;
  font: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  cursor: pointer;
  transition: opacity 0.8s ease;
  z-index: 5;
}

.veil__text {
  font-size: clamp(1rem, 3vw, 2rem);
  padding: 1rem 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  background: rgba(5, 5, 5, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  text-shadow: 0 0 35px rgba(0, 0, 0, 0.7);
}

.veil__hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hud {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  padding: clamp(1.5rem, 4vw, 4rem) clamp(1rem, 5vw, 5rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  pointer-events: none;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease 0.2s, transform 0.8s ease 0.2s;
}

.hud > * {
  pointer-events: none;
}

.eq {
  position: fixed;
  bottom: clamp(1.5rem, 4vw, 4rem);
  left: 50%;
  transform: translateX(-50%) translateY(40px);
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(32, 1fr);
  gap: 5px;
  align-items: flex-end;
  width: min(80vw, 960px);
  height: 140px;
  opacity: 0;
  transition: opacity 1s ease 0.4s, transform 1s ease 0.4s;
  pointer-events: none;
}

.entered .eq {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.eq__bar {
  width: 100%;
  border-radius: 999px;
  background: linear-gradient(200deg, rgba(255, 255, 255, 0.75), rgba(255, 255, 255, 0.15));
  box-shadow: 0 12px 25px rgba(255, 255, 255, 0.15);
  height: 6%;
  transform-origin: bottom center;
  transition: height 80ms linear;
}

.card {
  max-width: min(480px, 92vw);
  background: rgba(5, 5, 5, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 32px;
  padding: 2.75rem 2.5rem;
  backdrop-filter: blur(26px);
  -webkit-backdrop-filter: blur(26px);
  pointer-events: auto;
  box-shadow: 0 80px 160px rgba(0, 0, 0, 0.7);
  text-align: center;
}

.card__strap {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.card__title {
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.card__copy {
  margin: 0 0 1.5rem;
  color: var(--text-soft);
  line-height: 1.5;
}

.card {
  position: relative;
}

.card__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
}

.card__content--requisites {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 2.75rem 2.5rem;
  box-sizing: border-box;
}

.card__content--requisites.card__content--active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.card__content--main {
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.card__content--main.card__content--hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.card__actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
}

.card__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 2rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #fff;
  text-decoration: none;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.85rem;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
  cursor: pointer;
  font: inherit;
  white-space: nowrap;
  flex-shrink: 0;
}

.card__cta--button {
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.card__cta:hover {
  color: var(--accent-2);
  border-color: var(--accent-2);
  transform: translateY(-2px);
}

.card__requisites {
  margin: 0 0 1.5rem;
  color: var(--text-soft);
  line-height: 1.8;
  text-align: left;
  width: 100%;
  max-height: calc(100% - 120px);
  overflow-y: auto;
}

.card__requisites-item {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.card__requisites-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.card__requisites-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  display: block;
}

.card__requisites-value {
  font-size: 0.95rem;
  color: #fff;
  font-family: monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  transition: color 0.2s ease;
  padding: 0.5rem;
  border-radius: 8px;
  margin: -0.5rem;
}

.card__requisites-value:hover {
  color: var(--accent-2);
  background: rgba(255, 255, 255, 0.05);
}

.toast {
  position: fixed;
  top: clamp(1.5rem, 4vw, 4rem);
  right: clamp(1rem, 5vw, 5rem);
  transform: translateX(100px);
  z-index: 1000;
  background: rgba(5, 5, 5, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 32px;
  padding: 1.25rem 2rem;
  backdrop-filter: blur(26px);
  -webkit-backdrop-filter: blur(26px);
  box-shadow: 0 80px 160px rgba(0, 0, 0, 0.7);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  max-width: 90vw;
}

.toast--show {
  opacity: 1;
  transform: translateX(0);
}

.toast__message {
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  margin: 0;
  text-align: center;
}

.entered .bg-layer--intro {
  opacity: 0;
  filter: blur(12px);
}

.entered .bg-layer--crystals {
  opacity: 1;
}

.entered .veil {
  pointer-events: none;
  opacity: 0;
}

.entered .hud {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.entered .hud > * {
  pointer-events: auto;
}


.audio-controls {
  position: fixed;
  top: clamp(1.5rem, 4vw, 4rem);
  left: clamp(1rem, 5vw, 5rem);
  z-index: 3;
  opacity: 0;
  transform: translateY(-20px);
  transition: opacity 0.8s ease 0.2s, transform 0.8s ease 0.2s;
  pointer-events: none;
}

.entered .audio-controls {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.audio-controls__panel {
  background: rgba(5, 5, 5, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 32px;
  padding: 1.5rem 1.75rem;
  backdrop-filter: blur(26px);
  -webkit-backdrop-filter: blur(26px);
  box-shadow: 0 80px 160px rgba(0, 0, 0, 0.7);
  min-width: 280px;
  max-width: 320px;
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.track-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.track-info {
  flex: 1;
  min-width: 0;
}

.track-info__label {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin: 0 0 0.25rem;
}

.track-info__title {
  font-size: clamp(0.95rem, 2vw, 1.2rem);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  word-break: break-word;
  overflow-wrap: anywhere;
  color: #fff;
  line-height: 1.3;
}

.volume-control {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.volume-control__label {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  margin: 0;
}

.volume-control__slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  outline: none;
  cursor: pointer;
  transition: background 0.2s ease;
}

.volume-control__slider:hover {
  background: rgba(255, 255, 255, 0.15);
}

.volume-control__slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.volume-control__slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 6px 16px rgba(255, 255, 255, 0.4);
}

.volume-control__slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.volume-control__slider::-moz-range-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 6px 16px rgba(255, 255, 255, 0.4);
}

.track-controls {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.track-controls__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease, background 0.2s ease;
  padding: 0;
}

.track-controls__btn:hover {
  color: var(--accent-2);
  border-color: var(--accent-2);
  background: rgba(255, 255, 255, 0.08);
}

.track-controls__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.track-controls__btn svg {
  width: 18px;
  height: 18px;
}

@media (max-width: 600px) {
  .hud {
    padding: clamp(1.5rem, 4vw, 4rem) clamp(1rem, 5vw, 5rem);
    padding-top: clamp(5rem, 12vw, 7rem);
    padding-bottom: 7rem;
  }

  .eq {
    width: calc(100% - 2rem);
    height: 100px;
    gap: 4px;
    bottom: 1rem;
  }

  .card {
    padding: 2rem 1.5rem;
  }

  .card__actions {
    flex-direction: row;
    width: 100%;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: nowrap;
  }

  .card__cta {
    flex: 0 1 auto;
    min-width: 0;
    padding: 0.85rem 1.25rem;
    font-size: 0.8rem;
  }

  .card__requisites {
    font-size: 0.9rem;
    max-height: calc(100% - 100px);
  }

  .card__content--requisites {
    padding: 2rem 1.5rem;
  }

  .card__requisites-value {
    font-size: 0.85rem;
  }

  .toast {
    top: clamp(9rem, 20vw, 11rem);
    right: 1rem;
    left: auto;
    transform: translateX(0) translateY(-100px);
    padding: 1rem 1.5rem;
    max-width: calc(100% - 2rem);
  }

  .toast--show {
    transform: translateX(0) translateY(0);
  }

  .toast__message {
    font-size: 0.75rem;
  }

  .audio-controls {
    top: 0.75rem;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    right: auto;
    width: calc(100% - 2rem);
    max-width: 320px;
  }

  .entered .audio-controls {
    transform: translateX(-50%) translateY(0);
  }

  .audio-controls__panel {
    min-width: auto;
    max-width: 100%;
    width: 100%;
    padding: 1rem 1.25rem;
    gap: 0.875rem;
    border-radius: 24px;
  }

  .track-section {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
  }

  .track-info {
    flex: 1;
    min-width: 0;
  }

  .track-info__label {
    font-size: 0.65rem;
    margin: 0 0 0.2rem;
  }

  .track-info__title {
    font-size: clamp(0.85rem, 3vw, 1rem);
    line-height: 1.2;
  }

  .track-controls {
    flex-shrink: 0;
    gap: 0.5rem;
  }

  .track-controls__btn {
    width: 32px;
    height: 32px;
  }

  .track-controls__btn svg {
    width: 14px;
    height: 14px;
  }

  .volume-control {
    gap: 0.5rem;
  }

  .volume-control__label {
    font-size: 0.65rem;
  }

  .volume-control__slider {
    height: 5px;
  }

  .volume-control__slider::-webkit-slider-thumb {
    width: 16px;
    height: 16px;
  }

  .volume-control__slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
  }
}