/* Квест-марафон — glass shell, stars, cyan glow. */

/* ---------- Atmosphere ---------- */

.qm-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  /* Stars keep y >= ~26% so none sit in the header / shell-top band. */
  background:
    radial-gradient(1.5px 1.5px at 12% 28%, rgba(255, 255, 255, 0.55) 50%, transparent 51%),
    radial-gradient(1px 1px at 28% 42%, rgba(255, 255, 255, 0.4) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 44% 30%, rgba(255, 255, 255, 0.5) 50%, transparent 51%),
    radial-gradient(1px 1px at 62% 34%, rgba(255, 255, 255, 0.35) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 78% 28%, rgba(255, 255, 255, 0.5) 50%, transparent 51%),
    radial-gradient(1px 1px at 88% 38%, rgba(255, 255, 255, 0.35) 50%, transparent 51%),
    radial-gradient(1px 1px at 18% 58%, rgba(255, 255, 255, 0.3) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 36% 62%, rgba(255, 255, 255, 0.35) 50%, transparent 51%),
    radial-gradient(1px 1px at 54% 52%, rgba(255, 255, 255, 0.28) 50%, transparent 51%),
    radial-gradient(1px 1px at 72% 48%, rgba(255, 255, 255, 0.32) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 92% 42%, rgba(255, 255, 255, 0.4) 50%, transparent 51%),
    radial-gradient(1px 1px at 8% 48%, rgba(255, 255, 255, 0.28) 50%, transparent 51%),
    radial-gradient(ellipse 55% 40% at 20% 36%, rgba(40, 20, 80, 0.18), transparent 70%),
    radial-gradient(ellipse 50% 35% at 78% 32%, rgba(16, 60, 100, 0.14), transparent 70%),
    radial-gradient(ellipse 60% 45% at 55% 85%, rgba(10, 40, 80, 0.12), transparent 70%),
    linear-gradient(165deg, #010208 0%, #03060f 45%, #02050c 100%);
}

.qm-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1px 1px at 22% 40%, rgba(255, 255, 255, 0.35) 50%, transparent 51%),
    radial-gradient(1px 1px at 66% 38%, rgba(255, 255, 255, 0.28) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 48% 36%, rgba(180, 230, 255, 0.45) 50%, transparent 51%);
  opacity: 0.7;
  animation: qm-star-twinkle 7s ease-in-out infinite alternate;
}

/* ---------- Shell ---------- */

.qm-shell {
  position: relative;
  z-index: 1;
  flex: 1;
  min-height: 0;
  min-width: 0;
  max-width: 100%;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow-x: hidden;
  overflow-y: hidden;
  border-radius: var(--qm-radius);
  background: rgba(4, 8, 18, 0.94);
  border: 1px solid var(--qm-cyan-soft);
  box-shadow:
    0 0 0 1px rgba(94, 200, 255, 0.05) inset,
    0 0 24px rgba(94, 200, 255, 0.08),
    0 12px 40px rgba(0, 0, 0, 0.45);
  /* Pulse on ::before — never animate the backdrop-filter layer (Safari jank). */
  isolation: isolate;
}

.qm-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: inherit;
  pointer-events: none;
  box-shadow:
    0 0 0 1px rgba(94, 200, 255, 0.06) inset,
    0 0 22px rgba(94, 200, 255, 0.1),
    0 12px 40px rgba(0, 0, 0, 0.35);
  animation: qm-shell-pulse 8s ease-in-out infinite;
}

.qm-shell > .qm-main,
.qm-shell > .qm-footer {
  position: relative;
  z-index: 1;
}

@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .qm-shell {
    background: rgba(4, 10, 22, 0.88);
    -webkit-backdrop-filter: blur(12px) saturate(1.1);
    backdrop-filter: blur(12px) saturate(1.1);
  }
}

/* ---------- Header (outside shell) / footer ---------- */

.qm-header {
  position: relative;
  z-index: 8;
  padding: 0 4px 0 max(18px, env(safe-area-inset-left));
  border: 0;
  /* Opaque — blocks .qm-bg stars from showing through under nav labels. */
  background: var(--qm-bg, #02050c);
  flex-shrink: 0;
  overflow: visible;
}

.qm-footer {
  padding: 10px 16px;
  border-top: 1px solid var(--qm-cyan-soft);
  background: #02060e;
  margin: 0;
}

.qm-main {
  flex: 1;
  min-height: 0;
  min-width: 0;
  background: transparent;
  overflow-x: hidden;
}

/* ---------- Shared glass panels ---------- */

.qm-frame {
  border: 0;
  border-radius: 0;
  background: rgba(4, 10, 22, 0.72);
  box-shadow: none;
  overflow-x: hidden;
  overflow-y: auto;
}

@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .qm-frame {
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
  }
}

.qm-quest {
  background: transparent;
  border: 0;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

.qm-quest__frame {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.qm-quest__bar {
  border-top-color: var(--qm-cyan-soft);
  background: transparent;
}

.qm-quest__input {
  background: transparent;
  border-color: var(--qm-cyan-soft);
}

/* ---------- Home flush layout ---------- */

.qm-home {
  border: 0;
  border-radius: 0;
  background: transparent;
  gap: 0;
}

.qm-intro,
.qm-preview {
  border-bottom: 1px solid var(--qm-cyan-soft);
  background: rgba(4, 10, 22, 0.38);
  min-height: 0;
}

.qm-preview {
  background: transparent;
}

.qm-counter {
  border-top: 0;
  border-bottom: 1px solid var(--qm-cyan-soft);
  background: rgba(2, 6, 14, 0.55);
  padding: 12px 16px;
}

.qm-counter__row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.qm-counter__icon {
  display: inline-flex;
  color: var(--qm-cyan);
  opacity: 0.9;
}

.qm-counter__value {
  color: var(--qm-text);
}

.qm-counter__label {
  color: var(--qm-cyan);
  opacity: 0.85;
  margin-top: 2px;
}

.qm-rules-list {
  list-style: none;
  padding: 0;
  gap: 10px;
}

.qm-rules-list__item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.qm-rules-list__num {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--qm-cyan);
  color: var(--qm-cyan);
  font-family: var(--qm-font-head);
  font-size: 11px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  box-shadow: 0 0 10px rgba(94, 200, 255, 0.25);
}

.qm-rules-list__text {
  flex: 1;
  min-width: 0;
}

.qm-file-tag {
  color: rgba(200, 230, 255, 0.85);
  border-color: var(--qm-cyan-soft);
  border-radius: 999px;
}

.qm-file-tag--active {
  color: var(--qm-text);
  border-color: var(--qm-cyan);
  box-shadow: 0 0 12px rgba(94, 200, 255, 0.35);
  background: rgba(94, 200, 255, 0.1);
}

.qm-btn--outline {
  border-color: var(--qm-cyan-soft);
}

.qm-btn--outline:hover {
  color: var(--qm-cyan);
  border-color: var(--qm-cyan);
}

.qm-icon-btn:hover {
  color: var(--qm-cyan);
  border-color: var(--qm-cyan-soft);
  background: rgba(94, 200, 255, 0.08);
}

.qm-menu {
  background: rgba(8, 16, 36, 0.92);
  border-left-color: var(--qm-cyan-soft);
}

@supports ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  .qm-menu {
    background: rgba(8, 16, 36, 0.72);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
  }
}

/* ---------- Motion ---------- */

@keyframes qm-shell-pulse {
  0%,
  100% {
    box-shadow:
      0 0 0 1px rgba(94, 200, 255, 0.06) inset,
      0 0 22px rgba(94, 200, 255, 0.1),
      0 12px 40px rgba(0, 0, 0, 0.35);
  }
  50% {
    box-shadow:
      0 0 0 1px rgba(94, 200, 255, 0.1) inset,
      0 0 36px rgba(94, 200, 255, 0.2),
      0 12px 40px rgba(0, 0, 0, 0.35);
  }
}

@keyframes qm-star-twinkle {
  0% { opacity: 0.55; }
  100% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .qm-shell::before,
  .qm-bg::after {
    animation: none;
  }
}

/* ---------- Tablet 768–1023 ---------- */

@media (min-width: 768px) and (max-width: 1023px) {
  .qm-frame {
    padding: 36px 20px;
    gap: 24px;
  }

  .qm-intro__content {
    padding: 28px 20px;
  }

  .qm-preview__content {
    padding: 32px 20px;
  }

  .qm-room-list li {
    padding: 20px 6px;
  }

  .qm-frame > .qm-cta {
    margin-top: auto;
    align-self: center;
    margin-inline: auto;
    flex-shrink: 0;
  }
}

/* ---------- Tablet / desktop ---------- */

@media (min-width: 768px) {
  .qm-header {
    padding: 0 6px 0 32px;
  }

  .qm-footer {
    padding: 12px 22px;
  }

  .qm-intro,
  .qm-preview {
    min-height: 0;
  }

  .qm-counter {
    border-top: 1px solid var(--qm-cyan-soft);
    border-bottom: 0;
  }
}

/* ---------- Mobile ≤767px ---------- */

@media (max-width: 767px) {
  .qm-body {
    --qm-header-h: 72px;
    padding: 8px;
    padding-top: max(8px, env(safe-area-inset-top));
    padding-bottom: max(8px, env(safe-area-inset-bottom));
    padding-left: max(8px, env(safe-area-inset-left));
    padding-right: max(8px, env(safe-area-inset-right));
  }

  .qm-shell {
    max-width: 100%;
    min-width: 0;
    box-shadow:
      0 0 0 1px rgba(94, 200, 255, 0.06) inset,
      0 0 18px rgba(94, 200, 255, 0.1),
      0 8px 28px rgba(0, 0, 0, 0.35);
  }

  .qm-header {
    gap: 6px;
    padding: 0 2px 0 max(16px, env(safe-area-inset-left));
  }

  .qm-footer {
    padding: 10px 14px max(10px, env(safe-area-inset-bottom));
  }

  .qm-footer__credit {
    font-size: 10px;
  }

  .qm-brand-name {
    max-width: 100%;
  }

  .qm-langs {
    gap: 0;
    --qm-langs-w: 84px;
    --qm-langs-h: 26px;
  }

  .qm-burger {
    width: 41px;
    height: 41px;
  }

  .qm-burger__lines {
    gap: 5px;
  }

  .qm-burger__line {
    width: 16px;
    height: 1.7px;
  }

  .qm-burger__close {
    width: 21px;
    height: 21px;
  }

  .qm-intro,
  .qm-preview {
    min-height: 0;
  }

  .qm-intro__content,
  .qm-preview__content {
    padding: 18px 20px;
  }

  .qm-frame {
    padding: 22px 20px;
    gap: 18px;
    max-width: 100%;
  }

  .qm-title {
    font-size: 26px;
    overflow-wrap: anywhere;
  }

  .qm-cta {
    width: min(100%, 260px);
    margin-inline: auto;
    align-self: center;
  }

  .qm-frame > .qm-cta {
    margin-top: auto;
  }

  .qm-preview__content > .qm-cta {
    width: 100%;
    max-width: none;
    flex-direction: row;
    align-items: stretch;
    gap: 10px;
    margin-inline: 0;
    align-self: stretch;
  }

  .qm-preview__content > .qm-cta .qm-btn {
    flex: 1 1 0;
    width: auto;
    min-width: 0;
  }

  .qm-file-tags {
    justify-content: center;
  }

  .qm-file-tag {
    width: 68px;
    min-width: 68px;
    height: 34px;
    min-height: 34px;
    flex: 0 0 68px;
  }

  .qm-file-tags {
    flex-wrap: nowrap;
    justify-content: center;
  }

  .qm-room-list {
    padding: 4px 10px;
  }

  .qm-room-list li {
    gap: 10px;
    flex-wrap: wrap;
    padding: 20px 4px;
  }

  .qm-room-list li > span:last-child {
    font-size: 11px;
  }

  .qm-counter {
    text-align: left;
  }

  .qm-home {
    display: flex;
    flex-direction: column;
    min-height: 0;
    height: 100%;
  }

  /* картинка → кнопки → правила → лічильник */
  .qm-preview {
    order: 1;
    flex: 0 0 auto;
    max-height: none;
    min-height: 0;
    overflow: visible;
    display: -webkit-flex;
    display: flex;
    -webkit-flex-direction: column;
    flex-direction: column;
    border-bottom: 0;
  }

  .qm-preview__stage {
    flex: 0 0 auto;
    /* +10mm ≈ 38px / 2.375rem */
    height: min(calc(42vh + 38px), 318px);
    min-height: 198px;
    max-height: calc(48vh + 38px);
    -webkit-flex-shrink: 0;
    flex-shrink: 0;
  }

  .qm-preview__content {
    position: relative;
    z-index: 2;
    flex: 0 0 auto;
    height: auto;
    min-height: 0;
    padding: 12px 16px 14px;
    justify-content: center;
    background: transparent;
    box-sizing: border-box;
  }

  .qm-intro {
    order: 2;
    flex: 0 0 auto;
    min-height: 0;
    overflow: visible;
    border-bottom: 0;
  }

  .qm-counter {
    order: 3;
    flex: 0 0 auto;
    border-top: 1px solid var(--qm-cyan-soft);
    border-bottom: 0;
  }
}