:root {
  --bg-top: #f6e8d5;
  --bg-bottom: #ecf8f0;
  --bg-mid: #dcefff;
  --glow-a: rgba(245, 112, 80, 0.32);
  --glow-b: rgba(55, 164, 120, 0.26);
  --glow-c: rgba(70, 123, 219, 0.24);
  --stripe-opacity: 0.35;
  --ink: #1d1f24;
  --panel: rgba(255, 255, 255, 0.75);
  --panel-border: rgba(255, 255, 255, 0.5);
  --green: #49b86e;
  --red: #de5d4f;
  --yellow: #efb739;
  --blue: #3d7bd9;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Jura", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 15%, rgba(255, 255, 255, 0.8), transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(255, 255, 255, 0.55), transparent 45%),
    linear-gradient(145deg, var(--bg-top), var(--bg-mid) 52%, var(--bg-bottom));
  display: grid;
  place-items: center;
  padding: 24px;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: -20vmax;
  pointer-events: none;
  z-index: -1;
}

body::before {
  background:
    radial-gradient(circle at 25% 30%, var(--glow-a), transparent 30%),
    radial-gradient(circle at 75% 20%, var(--glow-c), transparent 32%),
    radial-gradient(circle at 70% 75%, var(--glow-b), transparent 30%),
    radial-gradient(circle at 20% 75%, rgba(255, 214, 118, 0.24), transparent 28%);
  filter: blur(22px) saturate(1.1);
  animation: auroraDrift 18s ease-in-out infinite alternate;
}

body::after {
  background:
    repeating-linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.14) 0,
      rgba(255, 255, 255, 0.14) 2px,
      transparent 2px,
      transparent 14px
    );
  opacity: var(--stripe-opacity);
  animation: textureShift 24s linear infinite;
}

body[data-theme="aurora"] {
  --bg-top: #f6e8d5;
  --bg-mid: #dcefff;
  --bg-bottom: #ecf8f0;
  --glow-a: rgba(245, 112, 80, 0.32);
  --glow-b: rgba(55, 164, 120, 0.26);
  --glow-c: rgba(70, 123, 219, 0.24);
  --stripe-opacity: 0.35;
}

body[data-theme="sunset"] {
  --bg-top: #ffd6b0;
  --bg-mid: #ffc8bf;
  --bg-bottom: #ffe7c7;
  --glow-a: rgba(255, 117, 87, 0.34);
  --glow-b: rgba(245, 177, 79, 0.28);
  --glow-c: rgba(255, 78, 137, 0.2);
  --stripe-opacity: 0.28;
}

body[data-theme="night"] {
  --bg-top: #1f2438;
  --bg-mid: #273551;
  --bg-bottom: #132434;
  --glow-a: rgba(88, 125, 255, 0.33);
  --glow-b: rgba(53, 216, 188, 0.23);
  --glow-c: rgba(42, 77, 163, 0.3);
  --panel: rgba(242, 247, 255, 0.78);
  --stripe-opacity: 0.22;
}

body[data-theme="mint"] {
  --bg-top: #e7ffe9;
  --bg-mid: #d4fff2;
  --bg-bottom: #d7f6ff;
  --glow-a: rgba(132, 232, 165, 0.33);
  --glow-b: rgba(91, 197, 255, 0.25);
  --glow-c: rgba(63, 170, 132, 0.21);
  --stripe-opacity: 0.25;
}

.game-shell {
  width: min(100%, 980px);
  background: var(--panel);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(6px);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 20px 44px rgba(38, 43, 54, 0.18);
}

.game-header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.subtitle {
  margin: 8px 0 0;
  opacity: 0.8;
  height: 1.5em;
  overflow: hidden;
}

.main-menu,
.auth-screen,
.account-screen {
  margin-top: 18px;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.55);
}

.main-menu h2,
.auth-screen h2,
.account-screen h2 {
  margin: 0;
  font-size: 1.25rem;
}

.menu-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.menu-head-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-menu-layout {
  display: grid;
  grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
  gap: 14px;
}

.menu-panel {
  min-width: 0;
}

.switch-account-btn {
  font: inherit;
  font-weight: 700;
  border: 1px solid rgba(28, 31, 39, 0.15);
  border-radius: 999px;
  background: linear-gradient(135deg, #fff, #efefef);
  color: #21242c;
  padding: 8px 12px;
  cursor: pointer;
}

.account-manage {
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(28, 31, 39, 0.14);
  background: rgba(255, 255, 255, 0.64);
}

.account-manage-title {
  margin: 0;
  font-weight: 700;
}

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

.account-manage-card {
  padding: 10px;
  border-radius: 10px;
  border: 1px solid rgba(28, 31, 39, 0.12);
  background: rgba(255, 255, 255, 0.68);
}

.manage-card-title {
  margin: 0 0 6px;
  font-weight: 700;
}

.secondary-action {
  background: linear-gradient(135deg, #f4f7ff, #e9eef8);
  color: #21242c;
  border: 1px solid rgba(28, 31, 39, 0.14);
}

.account-manage-danger {
  margin-top: 10px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid rgba(159, 44, 44, 0.25);
  background: rgba(255, 240, 240, 0.75);
  display: flex;
  align-items: end;
  gap: 10px;
}

.account-manage-danger > div {
  flex: 1;
}

.auth-btn.danger {
  background: linear-gradient(135deg, #d34646, #a12929);
  color: #fff;
}

.account-manage-message {
  margin: 10px 0 0;
  min-height: 1.3em;
  font-size: 0.9rem;
  opacity: 0.88;
}

.account-manage-message.error {
  color: #9f2c2c;
}

.account-manage-message.success {
  color: #1f7a3e;
}

.account-theme-block {
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(28, 31, 39, 0.14);
  background: rgba(255, 255, 255, 0.64);
}

.leaderboard-box {
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  background: rgba(255, 255, 255, 0.64);
}

.leaderboard-box h3 {
  margin: 0;
  font-size: 1.05rem;
}

.leaderboard-subtitle {
  margin: 8px 0 0;
  opacity: 0.82;
}

.leaderboard-cats {
  margin-top: 10px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 7px;
}

.leader-category-btn {
  font: inherit;
  font-weight: 700;
  border: 1px solid rgba(28, 31, 39, 0.18);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  padding: 8px 10px;
  cursor: pointer;
  text-align: left;
}

.leader-category-btn.active {
  border-color: #191d27;
  box-shadow: 0 0 0 2px rgba(25, 29, 39, 0.12);
}

.leaderboard-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.leaderboard-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 7px 9px;
  border-radius: 10px;
  border: 1px solid rgba(28, 31, 39, 0.14);
  background: rgba(255, 255, 255, 0.7);
}

.leaderboard-item.current {
  border-color: rgba(25, 29, 39, 0.35);
  background: rgba(236, 242, 255, 0.85);
}

.leader-rank {
  min-width: 1.5em;
  text-align: center;
  font-weight: 700;
}

.leader-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.leader-score {
  font-weight: 700;
}

.leaderboard-empty {
  margin: 12px 0 0;
  opacity: 0.78;
}

.account-box {
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  background: rgba(255, 255, 255, 0.64);
}

.account-box h3 {
  margin: 0;
  font-size: 1.04rem;
}

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

.auth-col {
  padding: 10px;
  border-radius: 10px;
  border: 1px solid rgba(28, 31, 39, 0.12);
  background: rgba(255, 255, 255, 0.62);
}

.auth-title {
  margin: 0 0 8px;
  font-weight: 700;
}

.auth-label {
  display: block;
  margin: 7px 0 4px;
  font-size: 0.85rem;
  opacity: 0.82;
}

.auth-input {
  width: 100%;
  font: inherit;
  border-radius: 9px;
  border: 1px solid rgba(27, 31, 39, 0.18);
  background: rgba(255, 255, 255, 0.92);
  padding: 8px 10px;
}

.auth-btn {
  margin-top: 10px;
  width: 100%;
  font: inherit;
  font-weight: 700;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, #2e2e2e, #111);
  color: #fff;
  padding: 9px 12px;
  cursor: pointer;
}

.auth-btn.secondary {
  width: auto;
  min-width: 120px;
  background: linear-gradient(135deg, #fff, #efefef);
  color: #21242c;
  border: 1px solid rgba(28, 31, 39, 0.12);
}

.auth-logged {
  margin-top: 10px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid rgba(28, 31, 39, 0.12);
  background: rgba(255, 255, 255, 0.62);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.auth-logged-actions {
  display: flex;
  gap: 8px;
}

.logged-text {
  margin: 0;
  font-weight: 700;
}

.auth-message {
  margin: 10px 0 0;
  min-height: 1.3em;
  font-size: 0.9rem;
  opacity: 0.85;
}

.auth-message.error {
  color: #9f2c2c;
}

.auth-message.success {
  color: #1f7a3e;
}

.menu-subtitle {
  margin: 6px 0 0;
  opacity: 0.8;
}

.mode-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

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

.mode-btn {
  font: inherit;
  font-weight: 700;
  border: 1px solid rgba(28, 31, 39, 0.18);
  border-radius: 12px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.95), rgba(245, 245, 245, 0.9));
  color: var(--ink);
  padding: 12px;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}

.mode-btn:hover {
  transform: translateY(-1px);
}

.mode-btn.active {
  border-color: #191d27;
  box-shadow: 0 0 0 2px rgba(25, 29, 39, 0.12);
  background: linear-gradient(160deg, #ffffff, #eceff7);
}

.theme-btn {
  font: inherit;
  font-weight: 700;
  border: 1px solid rgba(28, 31, 39, 0.18);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  padding: 10px 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 9px;
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}

.theme-btn:hover {
  transform: translateY(-1px);
}

.theme-btn.active {
  border-color: #191d27;
  box-shadow: 0 0 0 2px rgba(25, 29, 39, 0.12);
}

.theme-swatch {
  width: 24px;
  height: 24px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
  flex-shrink: 0;
}

.theme-swatch.aurora {
  background: linear-gradient(135deg, #f6e8d5, #dcefff 55%, #ecf8f0);
}

.theme-swatch.sunset {
  background: linear-gradient(135deg, #ffd6b0, #ffc8bf 55%, #ffe7c7);
}

.theme-swatch.night {
  background: linear-gradient(135deg, #1f2438, #273551 55%, #132434);
}

.theme-swatch.mint {
  background: linear-gradient(135deg, #e7ffe9, #d4fff2 55%, #d7f6ff);
}

.play-btn {
  margin-top: 12px;
  width: 100%;
  font: inherit;
  font-weight: 700;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, #2e2e2e, #111);
  color: #fff;
  padding: 11px 18px;
  cursor: pointer;
  box-shadow: 0 8px 14px rgba(0, 0, 0, 0.24);
}

.play-btn:hover {
  transform: translateY(-1px);
}

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

.play-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.game-area {
  margin-top: 18px;
}

.game-area.no-top-margin {
  margin-top: 0;
}

.is-hidden {
  display: none;
}

.hud {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  text-align: center;
  align-items: stretch;
}

.hud p {
  margin: 0;
  padding: 10px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.5);
  overflow: hidden;
}

.status {
  grid-column: 1 / -1;
  height: 46px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.board {
  margin: 24px auto 0;
  width: min(85vw, 440px);
  aspect-ratio: 1;
  border-radius: 50%;
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 14px;
  padding: 14px;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.22), rgba(0, 0, 0, 0.09));
  box-shadow: inset 0 8px 24px rgba(255, 255, 255, 0.22), 0 14px 28px rgba(0, 0, 0, 0.3);
}

.pad {
  border: none;
  cursor: pointer;
  border-radius: 18px;
  transition: transform 0.12s ease, filter 0.12s ease, box-shadow 0.12s ease;
  box-shadow: inset 0 -18px 24px rgba(0, 0, 0, 0.24);
}

.pad:hover {
  transform: scale(1.02);
}

.pad:active {
  transform: scale(0.98);
}

.pad:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.95);
  outline-offset: 2px;
}

.pad-green {
  background: linear-gradient(145deg, #6cd88b, var(--green));
  border-top-left-radius: 100%;
}

.pad-red {
  background: linear-gradient(215deg, #f78878, var(--red));
  border-top-right-radius: 100%;
}

.pad-yellow {
  background: linear-gradient(45deg, #ffd676, var(--yellow));
  border-bottom-left-radius: 100%;
}

.pad-blue {
  background: linear-gradient(300deg, #6ca6f6, var(--blue));
  border-bottom-right-radius: 100%;
}

.pad.active {
  filter: brightness(1.35) saturate(1.15);
  box-shadow: 0 0 26px rgba(255, 255, 255, 0.85), inset 0 0 22px rgba(255, 255, 255, 0.55);
}

.center-badge {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  width: 34%;
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #f3f3f3;
  border: 10px solid #16191f;
  color: #16191f;
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.33);
  pointer-events: none;
}

.controls {
  margin-top: 20px;
  display: flex;
  justify-content: center;
  gap: 12px;
}

.controls button {
  font: inherit;
  font-weight: 700;
  border: none;
  border-radius: 999px;
  padding: 10px 22px;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.controls button:hover {
  transform: translateY(-1px);
}

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

.start-btn {
  background: linear-gradient(135deg, #2e2e2e, #111);
  color: #fff;
  box-shadow: 0 8px 14px rgba(0, 0, 0, 0.26);
}

.reset-btn {
  background: linear-gradient(135deg, #fff, #efefef);
  color: #21242c;
  box-shadow: 0 8px 14px rgba(83, 91, 109, 0.15);
}

.menu-btn {
  background: linear-gradient(135deg, #f4f7ff, #e9eef8);
  color: #21242c;
  box-shadow: 0 8px 14px rgba(83, 91, 109, 0.2);
}

.hint {
  margin: 14px 0 0;
  text-align: center;
  opacity: 0.75;
}

.game-shell.error {
  animation: shake 0.34s ease;
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-6px);
  }
  75% {
    transform: translateX(6px);
  }
}

@keyframes auroraDrift {
  0% {
    transform: translate3d(-2%, -1%, 0) scale(1);
  }
  100% {
    transform: translate3d(2%, 1%, 0) scale(1.08);
  }
}

@keyframes textureShift {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(36px, 24px, 0);
  }
}

@media (max-width: 640px) {
  .game-shell {
    padding: 16px;
    border-radius: 18px;
  }

  .hud {
    grid-template-columns: 1fr;
  }

  .hud p {
    height: 46px;
  }

  .status {
    height: 62px;
    white-space: normal;
    text-overflow: clip;
  }

  .mode-grid {
    grid-template-columns: 1fr;
  }

  .theme-grid {
    grid-template-columns: 1fr;
  }

  .auth-forms {
    grid-template-columns: 1fr;
  }

  .auth-logged {
    flex-direction: column;
    align-items: flex-start;
  }

  .auth-logged-actions {
    width: 100%;
    flex-direction: column;
  }

  .auth-logged-actions .auth-btn.secondary {
    width: 100%;
  }

  .menu-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .menu-head-actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
  }

  .menu-head-actions .switch-account-btn {
    width: 100%;
  }

  .account-manage-grid {
    grid-template-columns: 1fr;
  }

  .account-manage-danger {
    flex-direction: column;
    align-items: stretch;
  }

  .main-menu-layout {
    grid-template-columns: 1fr;
  }

  .leaderboard-cats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .leader-category-btn {
    text-align: center;
  }

  .board {
    width: min(90vw, 360px);
    gap: 10px;
    padding: 10px;
  }

  .center-badge {
    border-width: 7px;
    font-size: 0.8rem;
  }
}