@import url("https://fonts.googleapis.com/css2?family=Unbounded:wght@500;700;800&family=Space+Grotesk:wght@400;500;700&display=swap");

:root {
  --bg: var(--tg-theme-bg-color, #0b0c10);
  --text: var(--tg-theme-text-color, #eaf0f6);
  --hint: var(--tg-theme-hint-color, rgba(234, 240, 246, 0.65));
  --card: var(--tg-theme-secondary-bg-color, rgba(255, 255, 255, 0.06));
  --btn: #d9a36a;
  --btnText: #2a1b12;
  --danger: #ff4d4d;
  --border: color-mix(in oklab, var(--text) 16%, transparent);
  --borderSoft: color-mix(in oklab, var(--text) 10%, transparent);
  --shadow: 0 16px 44px rgba(0, 0, 0, 0.32);
  --r: 18px;
  --r2: 14px;
  --focus: color-mix(in oklab, var(--btn) 72%, white 28%);
  --glass: color-mix(in oklab, var(--card) 78%, transparent);
  --glass2: color-mix(in oklab, var(--card) 62%, transparent);
  --sea-deep: #0b2438;
  --sea-mid: #0b5f73;
  --sea-bright: #1dd3d6;
  --sea-foam: #dff7ff;
  --sun: #ffb86b;
  --coral: #ff6b4a;
  --ink: #081622;
  --font-display: "Unbounded", "Space Grotesk", sans-serif;
  --font-body: "Space Grotesk", "Unbounded", "Segoe UI Symbol", "Apple Symbols", sans-serif;
  --font-math: "Space Grotesk", "STIX Two Math", "Cambria Math", "Segoe UI Symbol", "Apple Symbols", sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  height: 100%;
}

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

.bg {
  position: fixed;
  inset: -20px;
  z-index: -1;
  background:
    radial-gradient(900px 520px at 12% 18%, color-mix(in oklab, var(--sea-bright) 32%, transparent), transparent 60%),
    radial-gradient(820px 520px at 88% 10%, color-mix(in oklab, var(--sun) 26%, transparent), transparent 58%),
    radial-gradient(980px 620px at 50% 92%, color-mix(in oklab, var(--sea-foam) 18%, transparent), transparent 66%),
    linear-gradient(160deg, color-mix(in oklab, var(--sea-deep) 88%, transparent), transparent 60%);
  filter: saturate(1.08) contrast(1.02);
  animation: bgFloat 14s ease-in-out infinite;
}

.mode-exams .bg {
  background:
    linear-gradient(
      180deg,
      color-mix(in oklab, var(--ink) 62%, transparent) 0%,
      color-mix(in oklab, var(--sea-deep) 44%, transparent) 45%,
      color-mix(in oklab, var(--ink) 68%, transparent) 100%
    ),
    radial-gradient(70% 55% at 50% 0%, color-mix(in oklab, var(--sea-bright) 18%, transparent), transparent 72%),
    url("/miniapp/background-mobile.png");
  background-size: auto, auto, cover;
  background-position: center, center, center;
  background-repeat: no-repeat;
  filter: saturate(1.03) contrast(1.06) brightness(0.72);
}

@media (prefers-reduced-motion: reduce) {
  .bg {
    animation: none;
  }
}

@keyframes bgFloat {
  0% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(0, -10px, 0);
  }
  100% {
    transform: translate3d(0, 0, 0);
  }
}

.topbar {
  padding: 16px 16px 10px;
  display: grid;
  gap: 10px;
  align-items: start;
}

.topbar__row {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}

.topbar__lang {
  flex: 0 0 auto;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--borderSoft);
  background: color-mix(in oklab, var(--glass) 72%, transparent);
  border-radius: 999px;
  padding: 6px 10px;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.18);
}

.lang-switch__label {
  font-size: 12px;
  font-weight: 600;
  color: var(--hint);
}

.lang-switch__controls {
  display: inline-flex;
  gap: 6px;
}

.lang-switch__btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 7px 10px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
  background: color-mix(in oklab, var(--text) 8%, transparent);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
}

.lang-switch__btn:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.lang-switch__btn.lang-switch__btn--active {
  background: color-mix(in oklab, var(--btn) 92%, rgba(0,0,0,0.08));
  color: var(--btnText);
  border-color: color-mix(in oklab, var(--btn) 60%, white 40%);
}

.topbar__title {
  font-size: 18px;
  font-weight: 800;
  font-family: var(--font-display);
  letter-spacing: -0.2px;
  line-height: 1.1;
}

.topbar__sub {
  font-size: 12px;
  color: var(--hint);
}

.topbar__badge {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--borderSoft);
  background: color-mix(in oklab, var(--glass2) 82%, transparent);
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
}

.in-exam #topLang {
  display: none !important;
}

.mode-choice #qOpen {
  display: none !important;
}

.shell {
  padding: 0 16px 24px;
  max-width: 720px;
  margin: 0 auto;
}

.card {
  background: color-mix(in oklab, var(--glass) 86%, transparent);
  border: 1px solid var(--borderSoft);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  padding: 16px;
  backdrop-filter: blur(10px);
}

.card__head .h {
  font-size: 16px;
  font-weight: 800;
  font-family: var(--font-display);
  letter-spacing: -0.2px;
}

.card__head .p {
  margin-top: 6px;
  font-size: 12px;
  color: var(--hint);
  line-height: 1.35;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 14px;
}

.relax-actions {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.fact-card {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--r2);
  border: 1px solid var(--borderSoft);
  background: color-mix(in oklab, var(--bg) 12%, transparent);
  font-size: 13px;
  line-height: 1.4;
  white-space: pre-wrap;
}

.bsp-panel {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: var(--r2);
  border: 1px solid var(--borderSoft);
  background: color-mix(in oklab, var(--bg) 12%, transparent);
  font-size: 12px;
  line-height: 1.45;
  white-space: pre-wrap;
  position: relative;
  overflow: hidden;
  box-shadow: 0 16px 34px rgba(6, 20, 36, 0.22);
}

.bsp-panel code {
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid var(--borderSoft);
  background: color-mix(in oklab, var(--glass2) 75%, transparent);
  font-weight: 700;
}

.bsp-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    radial-gradient(120% 140% at 12% 0%, color-mix(in oklab, var(--sea-bright) 26%, transparent), transparent 60%),
    radial-gradient(120% 140% at 88% 100%, color-mix(in oklab, var(--sun) 24%, transparent), transparent 60%);
  opacity: 0.25;
  pointer-events: none;
}

.bsp-panel > * {
  position: relative;
  z-index: 1;
}

.bsp-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.bsp-tabs .btn {
  width: 100%;
}

.bsp-tabs .btn--primary {
  background: linear-gradient(150deg, color-mix(in oklab, var(--sea-bright) 88%, white 12%), color-mix(in oklab, var(--sea-mid) 68%, transparent));
  border-color: color-mix(in oklab, var(--sea-bright) 60%, white 40%);
  color: var(--ink);
}

.bsp-menu-actions,
.bsp-controls {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.bsp-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.bsp-row--single {
  grid-template-columns: 1fr;
}

.bsp-board-wrap {
  margin-top: 12px;
}

.bsp-board-title {
  font-size: 12px;
  color: var(--hint);
  margin-bottom: 8px;
  font-weight: 600;
}

.bsp-board {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: clamp(6px, 1.6vw, 10px);
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  padding: clamp(8px, 2vw, 12px);
  border-radius: 20px;
  position: relative;
  border: 1px solid color-mix(in oklab, var(--sea-bright) 22%, var(--borderSoft));
  background:
    linear-gradient(140deg, color-mix(in oklab, var(--sea-deep) 92%, transparent), color-mix(in oklab, var(--sea-mid) 70%, transparent));
  box-shadow: 0 22px 48px rgba(6, 18, 30, 0.4);
  overflow: hidden;
}

.bsp-board::before {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 16px;
  background:
    radial-gradient(120% 120% at 10% 0%, color-mix(in oklab, var(--sea-foam) 36%, transparent), transparent 65%),
    radial-gradient(140% 120% at 90% 90%, color-mix(in oklab, var(--sea-bright) 22%, transparent), transparent 70%),
    repeating-linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.04) 0,
      rgba(255, 255, 255, 0.04) 8px,
      transparent 8px,
      transparent 16px
    );
  opacity: 0.5;
  animation: boardGlow 6s ease-in-out infinite;
  pointer-events: none;
}

.bsp-board::after {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    repeating-linear-gradient(
      120deg,
      rgba(255, 255, 255, 0.08) 0,
      rgba(255, 255, 255, 0.08) 6px,
      transparent 6px,
      transparent 18px
    ),
    repeating-linear-gradient(
      210deg,
      rgba(255, 255, 255, 0.05) 0,
      rgba(255, 255, 255, 0.05) 8px,
      transparent 8px,
      transparent 20px
    );
  opacity: 0.2;
  animation: boardWaves 8s linear infinite;
  pointer-events: none;
}

.bsp-board[data-view="enemy"] {
  border-color: color-mix(in oklab, var(--coral) 42%, var(--borderSoft));
  box-shadow: 0 24px 54px rgba(50, 12, 12, 0.36);
}

.bsp-board[data-view="enemy"]::before {
  background:
    radial-gradient(120% 120% at 10% 0%, color-mix(in oklab, var(--sun) 30%, transparent), transparent 65%),
    radial-gradient(140% 120% at 90% 90%, color-mix(in oklab, var(--coral) 24%, transparent), transparent 70%),
    repeating-linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.05) 0,
      rgba(255, 255, 255, 0.05) 8px,
      transparent 8px,
      transparent 16px
    );
}

.bsp-board[data-view="enemy"]::after {
  opacity: 0.25;
  animation-duration: 6s;
}

.bsp-cell {
  aspect-ratio: 1 / 1;
  border-radius: 12px;
  border: 1px solid var(--borderSoft);
  background:
    radial-gradient(140% 140% at 20% 15%, rgba(255, 255, 255, 0.18), transparent 55%),
    linear-gradient(150deg, color-mix(in oklab, var(--glass2) 76%, transparent), color-mix(in oklab, var(--glass) 48%, transparent));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(18px, 4.2vw, 22px);
  line-height: 1;
  cursor: pointer;
  transition: transform 0.12s ease, border-color 0.12s ease, filter 0.12s ease;
  position: relative;
  z-index: 1;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05), 0 10px 18px rgba(3, 10, 20, 0.3);
  animation: none;
  overflow: hidden;
  text-shadow: 0 6px 18px rgba(8, 18, 30, 0.35);
}

.bsp-cell:hover {
  filter: brightness(1.05);
  border-color: color-mix(in oklab, var(--btn) 25%, var(--borderSoft));
}

.bsp-cell:active {
  transform: translateY(1px) scale(0.98);
}

.bsp-cell--disabled {
  cursor: default;
  filter: none;
}

.bsp-cell--disabled.bsp-cell--water,
.bsp-cell--disabled.bsp-cell--ghost-ok,
.bsp-cell--disabled.bsp-cell--ghost-bad {
  opacity: 0.7;
}

.bsp-cell--clickable {
  border-color: color-mix(in oklab, var(--sea-bright) 52%, var(--borderSoft));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1), 0 12px 24px rgba(8, 28, 48, 0.35);
  animation: cellPulse 1.8s ease-in-out infinite;
}

.bsp-cell::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 10px;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.bsp-cell::before {
  content: "";
  position: absolute;
  inset: -20%;
  border-radius: 50%;
  opacity: 0;
  transform: scale(0.6);
  pointer-events: none;
}

.bsp-cell--water {
  background:
    radial-gradient(120% 120% at 20% 0%, color-mix(in oklab, var(--sea-bright) 18%, transparent), transparent 60%),
    linear-gradient(160deg, color-mix(in oklab, var(--sea-deep) 88%, transparent), color-mix(in oklab, var(--sea-mid) 60%, transparent));
}

.bsp-cell--water::after {
  opacity: 0.6;
  background:
    radial-gradient(120% 120% at 20% 20%, rgba(255, 255, 255, 0.12), transparent 55%),
    linear-gradient(120deg, rgba(255, 255, 255, 0.05), transparent 70%);
  animation: waveMove 3.2s ease-in-out infinite;
}

.bsp-cell--ship {
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(255, 255, 255, 0.25), transparent 60%),
    linear-gradient(150deg, color-mix(in oklab, var(--sea-foam) 32%, var(--sea-mid)), color-mix(in oklab, var(--sea-mid) 70%, var(--sea-deep)));
  border-color: color-mix(in oklab, var(--sea-bright) 40%, var(--borderSoft));
}

.bsp-cell--hit {
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(255, 255, 255, 0.35), transparent 60%),
    linear-gradient(140deg, color-mix(in oklab, var(--coral) 70%, #200), color-mix(in oklab, #3c0d0d 70%, var(--coral)));
  border-color: color-mix(in oklab, var(--coral) 60%, white 40%);
  box-shadow: 0 0 24px rgba(255, 107, 74, 0.35), inset 0 0 0 1px rgba(255, 255, 255, 0.15);
}

.bsp-cell--hit::after {
  opacity: 1;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.45) 0%, transparent 70%);
  animation: hitFlash 0.8s ease-in-out infinite;
}

.bsp-cell--hit::before {
  opacity: 1;
  background:
    radial-gradient(circle at 45% 45%, rgba(255, 255, 255, 0.65), transparent 60%),
    radial-gradient(circle at 60% 60%, rgba(255, 128, 90, 0.6), transparent 65%),
    radial-gradient(circle at 35% 70%, rgba(255, 75, 75, 0.5), transparent 70%);
  animation: explosionBurst 0.9s ease-in-out infinite;
}

.bsp-cell--sunk {
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(255, 255, 255, 0.15), transparent 60%),
    linear-gradient(140deg, #2b0b0f, #0d0a12);
  border-color: color-mix(in oklab, var(--coral) 40%, var(--borderSoft));
  box-shadow: 0 0 30px rgba(255, 75, 75, 0.35);
}

.bsp-cell--sunk::after {
  opacity: 0.9;
  background: radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.2), transparent 65%);
  animation: smoke 2.4s ease-in-out infinite;
}

.bsp-cell--sunk::before {
  opacity: 1;
  background:
    radial-gradient(circle at 45% 45%, rgba(255, 130, 80, 0.35), transparent 65%),
    radial-gradient(circle at 55% 55%, rgba(90, 20, 20, 0.4), transparent 70%);
  animation: emberGlow 2.8s ease-in-out infinite;
}

.bsp-cell--miss {
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(255, 255, 255, 0.25), transparent 60%),
    linear-gradient(150deg, #0e2b3e, #0a1a26);
  border-color: color-mix(in oklab, var(--sea-bright) 55%, var(--borderSoft));
}

.bsp-cell--miss::after {
  opacity: 1;
  background: radial-gradient(circle, rgba(120, 209, 255, 0.4), transparent 70%);
  animation: ripple 1.6s ease-out 1;
}

.bsp-cell--miss::before {
  opacity: 1;
  background:
    radial-gradient(circle at 50% 45%, rgba(170, 240, 255, 0.35), transparent 65%),
    radial-gradient(circle at 55% 55%, rgba(120, 209, 255, 0.35), transparent 70%);
  animation: splashBurst 1.2s ease-out 1;
}

.bsp-cell--scan {
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(255, 255, 255, 0.25), transparent 60%),
    linear-gradient(150deg, #072b3b, #0a1622);
  border-color: color-mix(in oklab, var(--sea-bright) 70%, white 30%);
  box-shadow: 0 0 20px rgba(29, 211, 214, 0.35);
}

.bsp-cell--scan::after {
  opacity: 1;
  background: radial-gradient(circle, rgba(29, 211, 214, 0.35), transparent 70%);
  animation: scanPulse 1.8s ease-in-out infinite;
}

.bsp-cell--hint {
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(255, 255, 255, 0.2), transparent 60%),
    linear-gradient(150deg, #0f2c20, #0a1c14);
  border-color: color-mix(in oklab, #5dff8b 60%, var(--borderSoft));
  box-shadow: 0 0 18px rgba(93, 255, 139, 0.3);
}

.bsp-cell--hint::after {
  opacity: 0.85;
  background: radial-gradient(circle, rgba(93, 255, 139, 0.3), transparent 70%);
  animation: scanPulse 2.2s ease-in-out infinite;
}

.bsp-cell--ghost-ok {
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(255, 255, 255, 0.25), transparent 60%),
    linear-gradient(140deg, rgba(93, 255, 139, 0.25), rgba(16, 62, 36, 0.4));
  border-color: rgba(93, 255, 139, 0.45);
}

.bsp-cell--ghost-bad {
  background:
    radial-gradient(120% 120% at 20% 10%, rgba(255, 255, 255, 0.2), transparent 60%),
    linear-gradient(140deg, rgba(255, 107, 74, 0.3), rgba(62, 16, 20, 0.5));
  border-color: rgba(255, 107, 74, 0.5);
}

.bsp-join {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  margin-top: 12px;
}

.bsp-join input {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.bsp-toast {
  margin-top: 12px;
  border: 1px solid var(--borderSoft);
  border-radius: var(--r2);
  padding: 10px 12px;
  background: color-mix(in oklab, var(--bg) 18%, transparent);
  color: var(--text);
  font-size: 12px;
  line-height: 1.4;
}

.admin-body {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
}

.admin-body pre {
  margin: 10px 0;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--borderSoft);
  background: color-mix(in oklab, var(--glass2) 86%, transparent);
  overflow-x: auto;
  font-family: "Space Grotesk", "Unbounded", monospace;
  font-size: 12px;
  line-height: 1.4;
  white-space: pre;
}

.admin-table {
  margin: 12px 0;
  border-radius: 14px;
  border: 1px solid var(--borderSoft);
  background: color-mix(in oklab, var(--glass) 84%, transparent);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
  overflow: hidden;
  white-space: normal;
}

.admin-table__scroll {
  overflow-x: auto;
}

.admin-table__table {
  width: 100%;
  border-collapse: collapse;
  min-width: 320px;
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--text);
}

.admin-table__table th,
.admin-table__table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--borderSoft);
  vertical-align: middle;
}

.admin-table__table th {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--hint);
  background: color-mix(in oklab, var(--glass2) 72%, transparent);
}

.admin-table__table td {
  white-space: nowrap;
}

.admin-table__table td:first-child,
.admin-table__table th:first-child {
  white-space: normal;
}

.admin-table__table tr:last-child td {
  border-bottom: none;
}

.admin-table__table tbody tr:nth-child(even) {
  background: color-mix(in oklab, var(--glass2) 58%, transparent);
}

.admin-table__table tbody tr:hover {
  background: color-mix(in oklab, var(--glass2) 70%, transparent);
}

.admin-table__table .is-num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.admin-table__empty {
  text-align: center;
  color: var(--hint);
  padding: 12px 10px;
}

.admin-actions {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.admin-actions__row {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.admin-actions .btn--active {
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--btn) 65%, white 35%),
    color-mix(in oklab, var(--btn) 52%, rgba(0, 0, 0, 0.12))
  );
  color: var(--btnText);
  box-shadow:
    0 0 0 2px color-mix(in oklab, var(--btn) 55%, transparent),
    0 12px 26px rgba(0, 0, 0, 0.26);
  border-color: color-mix(in oklab, var(--btn) 62%, white 38%);
  transform: translateY(-1px);
}

.admin-input {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.admin-input input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--borderSoft);
  background: color-mix(in oklab, var(--glass) 86%, transparent);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
}

.admin-input input:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.admin-toast {
  margin-top: 10px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--borderSoft);
  background: color-mix(in oklab, var(--glass2) 78%, transparent);
  font-size: 12px;
  color: var(--hint);
}

@media (max-width: 520px) {
  .admin-actions__row {
    grid-template-columns: 1fr;
  }
  .admin-input {
    grid-template-columns: 1fr;
  }
  .admin-input button {
    width: 100%;
  }
}

.bsp-menu,
.bsp-game {
  animation: fadeUp 0.35s ease;
}

@keyframes cellPop {
  from {
    transform: scale(0.96);
    opacity: 0.6;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes cellPulse {
  0%, 100% {
    transform: translateY(0);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08), 0 12px 24px rgba(8, 28, 48, 0.35);
  }
  50% {
    transform: translateY(-1px);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14), 0 16px 30px rgba(13, 44, 70, 0.45);
  }
}

@keyframes boardGlow {
  0%, 100% {
    opacity: 0.5;
  }
  50% {
    opacity: 0.7;
  }
}

@keyframes waveMove {
  0%, 100% {
    transform: translateY(0);
    opacity: 0.55;
  }
  50% {
    transform: translateY(-4px);
    opacity: 0.8;
  }
}

@keyframes ripple {
  0% {
    transform: scale(0.6);
    opacity: 0.6;
  }
  100% {
    transform: scale(1.4);
    opacity: 0;
  }
}

@keyframes hitFlash {
  0%, 100% {
    opacity: 0.3;
    transform: scale(0.9);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.1);
  }
}

@keyframes smoke {
  0%, 100% {
    opacity: 0.3;
    transform: translateY(0);
  }
  50% {
    opacity: 0.7;
    transform: translateY(-2px);
  }
}

@keyframes scanPulse {
  0%, 100% {
    opacity: 0.4;
    transform: scale(0.85);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

@keyframes explosionBurst {
  0% {
    opacity: 0.9;
    transform: scale(0.6);
  }
  70% {
    opacity: 0.4;
    transform: scale(1.2);
  }
  100% {
    opacity: 0;
    transform: scale(1.4);
  }
}

@keyframes splashBurst {
  0% {
    opacity: 0.8;
    transform: scale(0.6);
  }
  100% {
    opacity: 0;
    transform: scale(1.5);
  }
}

@keyframes emberGlow {
  0%, 100% {
    opacity: 0.4;
    transform: scale(0.8);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.1);
  }
}

@keyframes boardWaves {
  0% {
    transform: translateX(-10%) translateY(0%);
  }
  100% {
    transform: translateX(10%) translateY(-5%);
  }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .bsp-menu,
  .bsp-game,
  .bsp-cell,
  .bsp-cell--clickable {
    animation: none;
  }

  .bsp-board::before {
    animation: none;
  }

  .bsp-board::after {
    animation: none;
  }

  .bsp-cell::after {
    animation: none;
  }

  .bsp-cell::before {
    animation: none;
  }
}

.bsp--busy .bsp-cell,
.bsp--busy .bsp-controls .btn,
.bsp--busy .bsp-menu-actions .btn,
.bsp--busy .bsp-join input,
.bsp--busy .bsp-join .btn,
.bsp--busy .actions .btn {
  pointer-events: none;
  filter: none;
}

.field {
  display: block;
}

.field--full {
  grid-column: 1 / -1;
}

.field__label {
  display: block;
  font-size: 12px;
  color: var(--hint);
  margin-bottom: 6px;
}

select,
input,
textarea {
  width: 100%;
  border-radius: var(--r2);
  border: 1px solid var(--borderSoft);
  padding: 12px 12px;
  background: color-mix(in oklab, var(--bg) 12%, transparent);
  color: var(--text);
  outline: none;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.12);
}

select {
  appearance: none;
  padding-right: 38px;
  background-image:
    linear-gradient(45deg, transparent 50%, color-mix(in oklab, var(--hint) 88%, transparent) 50%),
    linear-gradient(135deg, color-mix(in oklab, var(--hint) 88%, transparent) 50%, transparent 50%);
  background-position: calc(100% - 18px) 52%, calc(100% - 13px) 52%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

textarea {
  resize: vertical;
  min-height: 100px;
}

select:focus,
input:focus,
textarea:focus {
  border-color: color-mix(in oklab, var(--focus) 72%, transparent);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--btn) 18%, transparent), 0 14px 28px rgba(0,0,0,0.16);
}

.field__hint {
  margin-top: 8px;
  font-size: 11px;
  color: var(--hint);
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.btn {
  appearance: none;
  border: 1px solid var(--borderSoft);
  border-radius: var(--r2);
  padding: 12px 12px;
  background: color-mix(in oklab, var(--bg) 16%, transparent);
  color: var(--text);
  font-weight: 800;
  cursor: pointer;
  width: 100%;
  transition: transform 0.16s ease, filter 0.16s ease, background 0.16s ease, border-color 0.16s ease;
}

.btn--primary {
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--btn) 92%, white 8%),
    color-mix(in oklab, var(--btn) 84%, rgba(0,0,0,0.12))
  );
  border-color: color-mix(in oklab, var(--btn) 52%, white 48%);
  color: var(--btnText);
}

.btn--danger {
  background: color-mix(in oklab, var(--danger) 18%, transparent);
  border-color: color-mix(in oklab, var(--danger) 32%, transparent);
  color: var(--text);
}

.btn--ghost {
  background: color-mix(in oklab, var(--bg) 8%, transparent);
  border-color: color-mix(in oklab, var(--borderSoft) 80%, transparent);
  color: var(--text);
}

.btn:hover {
  filter: brightness(1.03);
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 14px 0;
}

.recent {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.chip {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: rgba(0, 0, 0, 0.10);
}

.chip__top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: baseline;
}

.chip__title {
  font-weight: 750;
  font-size: 13px;
}

.chip__meta {
  font-size: 11px;
  color: var(--hint);
  white-space: nowrap;
}

.chip__line {
  margin-top: 8px;
  font-size: 12px;
  color: var(--hint);
}

.q {
  margin-top: 12px;
}

.q__text {
  font-family: var(--font-math);
  font-size: 14px;
  line-height: 1.55;
  white-space: pre-wrap;
  font-variant-numeric: oldstyle-nums diagonal-fractions;
}

.q__opts {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.opt {
  font-family: var(--font-math);
  text-align: left;
  padding: 12px;
  border-radius: var(--r2);
  border: 1px solid var(--borderSoft);
  background: color-mix(in oklab, var(--bg) 12%, transparent);
  color: var(--text);
  cursor: pointer;
  font-weight: 750;
  font-variant-numeric: oldstyle-nums diagonal-fractions;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease, filter 0.16s ease;
}

.opt:hover {
  filter: brightness(1.03);
  border-color: color-mix(in oklab, var(--btn) 26%, var(--borderSoft));
}

.opt:active {
  transform: translateY(1px);
}

.q__open {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.toast {
  margin-top: 12px;
  border: 1px solid var(--borderSoft);
  border-radius: var(--r2);
  padding: 12px;
  background: color-mix(in oklab, var(--bg) 20%, transparent);
  color: var(--text);
  white-space: pre-wrap;
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.18);
  font-family: var(--font-math);
  font-variant-numeric: oldstyle-nums diagonal-fractions;
  line-height: 1.55;
}

/* KaTeX формулы */
.katex {
  font-size: 1.05em;
  line-height: 1.4;
}

.katex-display {
  margin: 0.5em 0;
  overflow-x: auto;
  overflow-y: hidden;
}

.q__text .katex,
.opt .katex,
.toast .katex {
  color: var(--text);
}

/* Блочные формулы по центру */
.katex-display > .katex {
  text-align: center;
}

.result {
  margin-top: 16px;
  padding: 14px;
  border-radius: var(--r);
  border: 1px solid color-mix(in oklab, var(--sea-foam) 12%, var(--borderSoft));
  background:
    radial-gradient(120% 90% at 8% 0%, color-mix(in oklab, var(--sea-bright) 10%, transparent), transparent 62%),
    radial-gradient(90% 100% at 100% 0%, color-mix(in oklab, var(--sun) 10%, transparent), transparent 68%),
    color-mix(in oklab, var(--glass) 82%, transparent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 18px 40px rgba(0, 0, 0, 0.22);
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 12px;
}

.result::before,
.result::after {
  content: "";
  position: absolute;
  pointer-events: none;
  filter: blur(12px);
  opacity: 0.35;
}

.result::before {
  width: 120px;
  height: 120px;
  border-radius: 999px;
  right: -24px;
  top: -24px;
  background: color-mix(in oklab, var(--sun) 70%, transparent);
}

.result::after {
  width: 130px;
  height: 130px;
  border-radius: 999px;
  left: -30px;
  bottom: -34px;
  background: color-mix(in oklab, var(--sea-bright) 75%, transparent);
}

.result > * {
  position: relative;
  z-index: 1;
}

.result__hero {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: center;
  border: 1px solid color-mix(in oklab, var(--sea-foam) 10%, var(--borderSoft));
  border-radius: 16px;
  padding: 12px;
  background:
    linear-gradient(145deg, color-mix(in oklab, var(--glass2) 75%, transparent), color-mix(in oklab, var(--bg) 20%, transparent));
  animation: resultHeroIn 0.45s ease-out both;
}

.result__hero[data-tone="excellent"] {
  border-color: color-mix(in oklab, var(--sea-bright) 26%, var(--borderSoft));
}

.result__hero[data-tone="good"] {
  border-color: color-mix(in oklab, var(--sun) 24%, var(--borderSoft));
}

.result__hero[data-tone="retry"] {
  border-color: color-mix(in oklab, var(--danger) 22%, var(--borderSoft));
}

.result-ring {
  --result-pct: 0;
  --ring-color: color-mix(in oklab, var(--btn) 76%, white 24%);
  --ring-color-soft: color-mix(in oklab, var(--btn) 28%, transparent);
  width: 112px;
  aspect-ratio: 1;
  position: relative;
  display: grid;
  place-items: center;
  isolation: isolate;
}

.result-ring[data-tone="excellent"] {
  --ring-color: color-mix(in oklab, var(--sea-bright) 90%, white 10%);
  --ring-color-soft: color-mix(in oklab, var(--sea-bright) 22%, transparent);
}

.result-ring[data-tone="good"] {
  --ring-color: color-mix(in oklab, var(--sun) 88%, white 12%);
  --ring-color-soft: color-mix(in oklab, var(--sun) 22%, transparent);
}

.result-ring[data-tone="ok"] {
  --ring-color: color-mix(in oklab, var(--btn) 82%, white 18%);
  --ring-color-soft: color-mix(in oklab, var(--btn) 20%, transparent);
}

.result-ring[data-tone="retry"] {
  --ring-color: color-mix(in oklab, var(--danger) 86%, white 14%);
  --ring-color-soft: color-mix(in oklab, var(--danger) 22%, transparent);
}

.result-ring__glow {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--ring-color-soft) 0%, transparent 70%);
  opacity: 0.9;
  animation: resultRingGlow 2.6s ease-in-out infinite;
}

.result-ring__track,
.result-ring__fill {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  -webkit-mask: radial-gradient(circle, transparent 58%, #000 60%);
  mask: radial-gradient(circle, transparent 58%, #000 60%);
}

.result-ring__track {
  background: conic-gradient(
    from -90deg,
    color-mix(in oklab, var(--sea-foam) 10%, transparent),
    color-mix(in oklab, var(--sea-foam) 4%, transparent)
  );
  border: 1px solid color-mix(in oklab, var(--sea-foam) 12%, transparent);
}

.result-ring__fill {
  background:
    conic-gradient(
      from -90deg,
      var(--ring-color) 0 calc(var(--result-pct) * 1%),
      transparent calc(var(--result-pct) * 1%) 100%
    );
  filter: drop-shadow(0 0 8px color-mix(in oklab, var(--ring-color) 35%, transparent));
  animation: resultRingSweep 0.9s cubic-bezier(.2,.9,.2,1) both;
}

.result-ring__core {
  width: 76%;
  height: 76%;
  border-radius: 50%;
  border: 1px solid color-mix(in oklab, var(--sea-foam) 10%, var(--borderSoft));
  background:
    radial-gradient(120% 120% at 30% 20%, rgba(255,255,255,0.06), transparent 55%),
    color-mix(in oklab, var(--glass2) 86%, transparent);
  backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  gap: 2px;
  align-content: center;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}

.result__score {
  font-size: 22px;
  font-weight: 850;
  letter-spacing: -0.6px;
  line-height: 1;
}

.result-ring__label {
  font-size: 10px;
  color: var(--hint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.result__hero-copy {
  min-width: 0;
  display: grid;
  gap: 6px;
  animation: resultHeroTextIn 0.55s ease-out both;
}

.result__badge {
  width: fit-content;
  max-width: 100%;
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--sea-foam) 14%, var(--borderSoft));
  background: color-mix(in oklab, var(--glass2) 82%, transparent);
  padding: 6px 9px;
  font-size: 11px;
  font-weight: 800;
  color: var(--sea-foam);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.result__headline {
  font-family: var(--font-display);
  font-size: 15px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.2px;
}

.result__subline {
  font-size: 12px;
  color: color-mix(in oklab, var(--text) 86%, var(--hint));
  line-height: 1.35;
}

.result__note {
  font-size: 12px;
  color: var(--hint);
  line-height: 1.4;
  white-space: pre-line;
}

.result__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.result-stat {
  --accent: color-mix(in oklab, var(--sea-foam) 10%, transparent);
  border: 1px solid color-mix(in oklab, var(--sea-foam) 10%, var(--borderSoft));
  border-radius: 14px;
  padding: 10px 11px;
  background:
    linear-gradient(160deg, color-mix(in oklab, var(--glass2) 75%, transparent), color-mix(in oklab, var(--bg) 18%, transparent));
  display: grid;
  gap: 3px;
  position: relative;
  overflow: hidden;
  animation: resultStatIn 0.45s ease-out both;
  animation-delay: calc(var(--result-stagger, 0) * 55ms);
}

.result-stat::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--accent);
  opacity: 0.95;
}

.result-stat::after {
  content: "";
  position: absolute;
  width: 80px;
  height: 80px;
  right: -20px;
  top: -22px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in oklab, var(--accent) 45%, transparent), transparent 70%);
  opacity: 0.28;
}

.result-stat.is-correct {
  --accent: color-mix(in oklab, var(--sea-bright) 75%, white 25%);
}

.result-stat.is-wrong {
  --accent: color-mix(in oklab, var(--danger) 72%, white 20%);
}

.result-stat.is-accent {
  --accent: color-mix(in oklab, var(--sun) 78%, white 22%);
}

.result-stat.is-info {
  --accent: color-mix(in oklab, var(--btn) 78%, white 22%);
}

.result-stat.is-neutral {
  --accent: color-mix(in oklab, var(--sea-foam) 28%, transparent);
}

.result-stat__label {
  font-size: 11px;
  color: var(--hint);
  line-height: 1.2;
}

.result-stat__value {
  font-size: 20px;
  line-height: 1.1;
  font-weight: 850;
  letter-spacing: -0.4px;
  font-variant-numeric: tabular-nums;
}

.result-stat__hint {
  font-size: 10px;
  color: var(--hint);
}

.result__feedback {
  border: 1px solid color-mix(in oklab, var(--sea-foam) 10%, var(--borderSoft));
  border-radius: 14px;
  padding: 12px;
  background:
    linear-gradient(150deg, color-mix(in oklab, var(--glass2) 72%, transparent), color-mix(in oklab, var(--bg) 20%, transparent));
  white-space: pre-wrap;
  line-height: 1.5;
  font-size: 12px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.03);
}

.result__review-wrap {
  display: grid;
  gap: 10px;
  border: 1px solid color-mix(in oklab, var(--sea-foam) 10%, var(--borderSoft));
  border-radius: 16px;
  padding: 12px;
  background:
    radial-gradient(140% 120% at 100% 0%, color-mix(in oklab, var(--sea-bright) 7%, transparent), transparent 55%),
    color-mix(in oklab, var(--glass2) 72%, transparent);
}

.result__review-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.result__review-title {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: -0.15px;
}

.result__review-count {
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--sea-foam) 14%, var(--borderSoft));
  background: color-mix(in oklab, var(--glass) 84%, transparent);
  padding: 5px 9px;
  font-size: 11px;
  font-weight: 700;
  color: var(--hint);
}

.result__review {
  display: grid;
  gap: 10px;
}

.result-review__title {
  font-size: 12px;
  font-weight: 800;
  color: var(--hint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.result-review__empty {
  border: 1px dashed color-mix(in oklab, var(--sea-foam) 14%, var(--borderSoft));
  border-radius: 12px;
  padding: 12px;
  font-size: 12px;
  color: var(--hint);
  background: color-mix(in oklab, var(--glass) 64%, transparent);
}

.result-review__card {
  border: 1px solid color-mix(in oklab, var(--danger) 22%, var(--borderSoft));
  border-radius: 14px;
  padding: 11px 12px;
  background:
    linear-gradient(160deg, color-mix(in oklab, var(--glass) 82%, transparent), color-mix(in oklab, var(--bg) 18%, transparent));
  display: grid;
  gap: 8px;
  position: relative;
  overflow: hidden;
  animation: reviewCardIn 0.4s ease-out both;
  animation-delay: calc(var(--review-stagger, 0) * 50ms);
}

.result-review__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: color-mix(in oklab, var(--danger) 78%, white 22%);
}

.result-review__card::after {
  content: "";
  position: absolute;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  right: -26px;
  top: -30px;
  background: radial-gradient(circle, color-mix(in oklab, var(--danger) 28%, transparent), transparent 70%);
  opacity: 0.22;
}

.result-review__card.is-correct {
  border-color: color-mix(in oklab, var(--sea-bright) 20%, var(--borderSoft));
}

.result-review__card.is-correct::before {
  background: color-mix(in oklab, var(--sea-bright) 80%, white 20%);
}

.result-review__card.is-correct::after {
  background: radial-gradient(circle, color-mix(in oklab, var(--sea-bright) 26%, transparent), transparent 70%);
}

.result-review__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.result-review__head-left {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  min-width: 0;
}

.result-review__num {
  font-size: 12px;
  font-weight: 800;
  color: var(--text);
}

.result-review__type {
  font-size: 10px;
  font-weight: 700;
  border-radius: 999px;
  padding: 4px 7px;
  border: 1px solid color-mix(in oklab, var(--sea-foam) 14%, var(--borderSoft));
  background: color-mix(in oklab, var(--glass2) 78%, transparent);
  color: var(--hint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.result-review__type.is-open {
  border-color: color-mix(in oklab, var(--sun) 28%, var(--borderSoft));
  background: color-mix(in oklab, var(--sun) 10%, transparent);
  color: color-mix(in oklab, var(--sun) 68%, white 32%);
}

.result-review__badge {
  font-size: 11px;
  font-weight: 700;
  border-radius: 999px;
  padding: 4px 8px;
  border: 1px solid color-mix(in oklab, var(--danger) 35%, var(--borderSoft));
  background: color-mix(in oklab, var(--danger) 12%, transparent);
  color: color-mix(in oklab, var(--danger) 70%, white 30%);
}

.result-review__badge.is-correct {
  border-color: color-mix(in oklab, var(--sea-bright) 35%, var(--borderSoft));
  background: color-mix(in oklab, var(--sea-bright) 12%, transparent);
  color: color-mix(in oklab, var(--sea-bright) 70%, white 30%);
}

.result-review__block {
  display: grid;
  gap: 4px;
}

.result-review__label {
  font-size: 10px;
  color: var(--hint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
}

.result-review__value {
  white-space: pre-wrap;
  line-height: 1.5;
  font-size: 12px;
  font-family: var(--font-math);
  border-radius: 10px;
  border: 1px solid color-mix(in oklab, var(--sea-foam) 8%, var(--borderSoft));
  background: color-mix(in oklab, var(--bg) 14%, transparent);
  padding: 8px 9px;
}

.loader {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: color-mix(in oklab, var(--bg) 58%, transparent);
  backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.loader--active {
  opacity: 1;
  pointer-events: all;
}

.loader__card {
  width: min(420px, 100%);
  background: color-mix(in oklab, var(--glass) 86%, transparent);
  border: 1px solid var(--borderSoft);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  padding: 22px 20px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.loader__shine {
  position: absolute;
  inset: -40% -60%;
  background: linear-gradient(120deg, transparent 38%, rgba(255, 255, 255, 0.14), transparent 62%);
  transform: translateX(-40%);
  animation: loaderShine 1.6s ease-in-out infinite;
  pointer-events: none;
}

.loader__title {
  font-size: 16px;
  font-weight: 850;
  letter-spacing: -0.2px;
}

.loader__desc {
  margin-top: 8px;
  font-size: 12px;
  color: var(--hint);
  line-height: 1.4;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.loader__desc--swap {
  opacity: 0.35;
  transform: translateY(-2px);
}

.loader__note {
  margin-top: 6px;
  font-size: 11px;
  color: var(--hint);
  opacity: 0.85;
}

.loader__visual {
  margin: 12px auto 0;
  width: min(340px, 100%);
  display: grid;
  gap: 10px;
  justify-items: center;
}

.loader-orbit {
  width: 86px;
  aspect-ratio: 1;
  position: relative;
  display: grid;
  place-items: center;
  isolation: isolate;
}

.loader-orbit__ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid color-mix(in oklab, var(--sea-foam) 16%, transparent);
  opacity: 0.55;
}

.loader-orbit__ring--mid {
  inset: 10px;
  opacity: 0.45;
}

.loader-orbit__ring--inner {
  inset: 20px;
  opacity: 0.35;
}

.loader-orbit__scan {
  position: absolute;
  inset: 2px;
  border-radius: 50%;
  background:
    conic-gradient(
      from 0deg,
      transparent 0 72%,
      color-mix(in oklab, var(--btn) 72%, white 28%) 86%,
      transparent 100%
    );
  -webkit-mask: radial-gradient(circle, transparent 52%, #000 58%, #000 62%, transparent 68%);
  mask: radial-gradient(circle, transparent 52%, #000 58%, #000 62%, transparent 68%);
  animation: loaderSpin 2.8s linear infinite;
  opacity: 0.9;
}

.loader-orbit__core {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid color-mix(in oklab, var(--sea-foam) 15%, var(--borderSoft));
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.14), transparent 60%),
    color-mix(in oklab, var(--glass2) 90%, transparent);
  box-shadow:
    0 0 0 8px color-mix(in oklab, var(--btn) 9%, transparent),
    0 0 16px color-mix(in oklab, var(--btn) 16%, transparent);
  animation: loaderPulseCore 1.8s ease-in-out infinite;
}

.loader-orbit__dot {
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: color-mix(in oklab, var(--btn) 78%, white 22%);
  box-shadow: 0 0 8px color-mix(in oklab, var(--btn) 24%, transparent);
}

.loader-orbit__dot--a {
  animation: loaderOrbitA 2.4s linear infinite;
}

.loader-orbit__dot--b {
  width: 6px;
  height: 6px;
  background: color-mix(in oklab, var(--sea-bright) 72%, white 28%);
  box-shadow: 0 0 8px color-mix(in oklab, var(--sea-bright) 24%, transparent);
  animation: loaderOrbitB 3.2s linear infinite;
}

.loader__stage-list {
  width: 100%;
  display: grid;
  gap: 6px;
}

.loader-stage {
  display: grid;
  grid-template-columns: 14px 1fr;
  gap: 8px;
  align-items: center;
  border-radius: 10px;
  border: 1px solid color-mix(in oklab, var(--sea-foam) 8%, var(--borderSoft));
  background: color-mix(in oklab, var(--glass2) 60%, transparent);
  padding: 6px 8px;
  opacity: 0.7;
  transition: opacity 0.2s ease, transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.loader-stage__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid color-mix(in oklab, var(--sea-foam) 18%, var(--borderSoft));
  background: color-mix(in oklab, var(--sea-foam) 8%, transparent);
  position: relative;
}

.loader-stage__dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid transparent;
  opacity: 0;
}

.loader-stage__text {
  text-align: left;
  font-size: 11px;
  line-height: 1.25;
  color: color-mix(in oklab, var(--text) 85%, var(--hint));
}

.loader-stage.is-active {
  opacity: 1;
  transform: translateY(-1px);
  border-color: color-mix(in oklab, var(--btn) 24%, var(--borderSoft));
  background: color-mix(in oklab, var(--btn) 9%, var(--glass2));
}

.loader-stage.is-active .loader-stage__dot {
  border-color: color-mix(in oklab, var(--btn) 36%, var(--borderSoft));
  background: color-mix(in oklab, var(--btn) 72%, white 28%);
  box-shadow: 0 0 8px color-mix(in oklab, var(--btn) 22%, transparent);
}

.loader-stage.is-active .loader-stage__dot::after {
  border-color: color-mix(in oklab, var(--btn) 26%, transparent);
  opacity: 0.75;
  animation: loaderStagePulse 1.2s ease-out infinite;
}

.loader-stage.is-done {
  opacity: 0.9;
  border-color: color-mix(in oklab, var(--sea-bright) 18%, var(--borderSoft));
  background: color-mix(in oklab, var(--sea-bright) 7%, var(--glass2));
}

.loader-stage.is-done .loader-stage__dot {
  border-color: color-mix(in oklab, var(--sea-bright) 26%, var(--borderSoft));
  background: color-mix(in oklab, var(--sea-bright) 74%, white 26%);
}

.loader[data-mode="final"] .loader__card {
  border-color: color-mix(in oklab, var(--sea-bright) 22%, var(--borderSoft));
  background:
    radial-gradient(120% 120% at 15% 0%, color-mix(in oklab, var(--sea-bright) 10%, transparent), transparent 55%),
    radial-gradient(120% 110% at 100% 0%, color-mix(in oklab, var(--sun) 7%, transparent), transparent 62%),
    color-mix(in oklab, var(--glass) 88%, transparent);
}

.loader[data-mode="final"] .loader__title {
  color: color-mix(in oklab, var(--sea-foam) 94%, white 6%);
}

.loader[data-mode="final"] .loader__bar-fill {
  background: linear-gradient(
    90deg,
    transparent 0%,
    color-mix(in oklab, var(--sea-bright) 74%, white 26%) 38%,
    color-mix(in oklab, var(--sun) 66%, white 34%) 58%,
    transparent 100%
  );
}

.loader[data-mode="final"] .loader__dots span {
  background: color-mix(in oklab, var(--sea-bright) 78%, white 22%);
}

.loader[data-mode="final"] .loader-orbit__scan {
  background:
    conic-gradient(
      from 0deg,
      transparent 0 66%,
      color-mix(in oklab, var(--sea-bright) 80%, white 20%) 84%,
      color-mix(in oklab, var(--sun) 64%, white 36%) 92%,
      transparent 100%
    );
}

.loader[data-mode="final"] .loader-orbit__core {
  box-shadow:
    0 0 0 8px color-mix(in oklab, var(--sea-bright) 10%, transparent),
    0 0 16px color-mix(in oklab, var(--sea-bright) 18%, transparent);
}

.loader[data-mode="final"] .loader-stage.is-active {
  border-color: color-mix(in oklab, var(--sea-bright) 24%, var(--borderSoft));
  background: color-mix(in oklab, var(--sea-bright) 9%, var(--glass2));
}

.loader[data-mode="final"] .loader-stage.is-active .loader-stage__dot {
  border-color: color-mix(in oklab, var(--sea-bright) 36%, var(--borderSoft));
  background: color-mix(in oklab, var(--sea-bright) 78%, white 22%);
  box-shadow: 0 0 10px color-mix(in oklab, var(--sea-bright) 26%, transparent);
}

.loader__bar {
  margin: 14px auto 0;
  height: 8px;
  width: min(280px, 100%);
  border-radius: 999px;
  border: 1px solid var(--borderSoft);
  background: color-mix(in oklab, var(--glass2) 70%, transparent);
  overflow: hidden;
  position: relative;
}

.loader__bar-fill {
  position: absolute;
  inset: 0;
  width: 42%;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    color-mix(in oklab, var(--btn) 70%, white 30%) 45%,
    transparent 100%
  );
  transform: translateX(-70%);
  animation: loaderBar 1.35s ease-in-out infinite;
}

.loader__dots {
  display: inline-flex;
  gap: 6px;
  margin-top: 14px;
}

.loader__actions {
  display: flex;
  justify-content: center;
  margin-top: 14px;
}

.loader__actions .btn {
  width: auto;
  padding: 10px 14px;
  font-size: 12px;
  font-weight: 700;
}

.loader__dots span {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--btn) 70%, white 30%);
  animation: loaderBounce 0.9s ease-in-out infinite;
}

.loader__dots span:nth-child(2) {
  animation-delay: 0.15s;
}

.loader__dots span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes loaderBounce {
  0%, 100% {
    transform: translateY(0);
    opacity: 0.6;
  }
  50% {
    transform: translateY(-6px);
    opacity: 1;
  }
}

@keyframes loaderShine {
  0% {
    transform: translateX(-40%);
    opacity: 0.2;
  }
  50% {
    transform: translateX(20%);
    opacity: 0.65;
  }
  100% {
    transform: translateX(60%);
    opacity: 0.2;
  }
}

@keyframes loaderBar {
  0% {
    transform: translateX(-70%);
    opacity: 0.4;
  }
  50% {
    transform: translateX(40%);
    opacity: 1;
  }
  100% {
    transform: translateX(130%);
    opacity: 0.4;
  }
}

@keyframes loaderSpin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes loaderPulseCore {
  0%, 100% {
    transform: scale(1);
    opacity: 0.9;
  }
  50% {
    transform: scale(1.08);
    opacity: 1;
  }
}

@keyframes loaderOrbitA {
  0% {
    transform: rotate(0deg) translateY(-34px) rotate(0deg);
  }
  100% {
    transform: rotate(360deg) translateY(-34px) rotate(-360deg);
  }
}

@keyframes loaderOrbitB {
  0% {
    transform: rotate(220deg) translateY(-22px) rotate(-220deg);
  }
  100% {
    transform: rotate(-140deg) translateY(-22px) rotate(140deg);
  }
}

@keyframes loaderStagePulse {
  0% {
    transform: scale(0.75);
    opacity: 0.65;
  }
  100% {
    transform: scale(1.35);
    opacity: 0;
  }
}

@keyframes resultHeroIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes resultHeroTextIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes resultRingSweep {
  from {
    opacity: 0.2;
    transform: scale(0.94);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes resultRingGlow {
  0%, 100% {
    transform: scale(0.98);
    opacity: 0.65;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.95;
  }
}

@keyframes resultStatIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes reviewCardIn {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .loader__shine,
  .loader__dots span,
  .loader__bar-fill,
  .loader-orbit__scan,
  .loader-orbit__core,
  .loader-orbit__dot,
  .loader-stage.is-active .loader-stage__dot::after,
  .result-ring__glow {
    animation: none;
  }
  .result__hero,
  .result__hero-copy,
  .result-ring__fill,
  .result-stat,
  .result-review__card {
    animation: none !important;
  }
}

@media (max-width: 420px) {
  .topbar__row {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .actions {
    flex-direction: column;
  }
  .result__hero {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }
  .result__hero-copy {
    justify-items: center;
  }
  .result__stats {
    grid-template-columns: 1fr;
  }
  .result__review-head {
    flex-direction: column;
    align-items: flex-start;
  }
  .loader__card {
    padding: 18px 14px;
  }
  .loader__visual {
    width: 100%;
  }
}

/* ========== KaTeX формулы ========== */

/* Контейнер вопроса с формулами */
.q__text {
  line-height: 1.8;
}

/* KaTeX inline формулы */
.q__text .katex,
.opt .katex {
  font-size: 1.05em;
}

/* KaTeX block формулы */
.q__text .katex-display {
  margin: 16px 0;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 8px 0;
}

/* Ошибки рендеринга формул */
.math-error {
  color: var(--danger);
  font-family: monospace;
  font-size: 0.9em;
  background: rgba(255, 77, 77, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Варианты ответов с формулами */
.opt .katex {
  display: inline;
  vertical-align: middle;
}

/* Улучшенная читаемость формул */
.katex {
  color: var(--text);
}

/* Дроби и большие операторы */
.katex .frac-line {
  border-color: var(--text);
}

/* Химические формулы - верхние и нижние индексы */
.q__text sub,
.q__text sup,
.opt sub,
.opt sup {
  font-size: 0.75em;
  line-height: 0;
}

/* Адаптивность для мобильных */
@media (max-width: 420px) {
  .q__text .katex-display {
    font-size: 0.95em;
  }
  
  .opt .katex {
    font-size: 0.95em;
  }
}