:root {
  --page-bg-a: #0b1d18;
  --page-bg-b: #18372b;
  --panel: rgba(9, 20, 18, 0.82);
  --panel-strong: rgba(10, 28, 24, 0.94);
  --panel-border: rgba(239, 210, 127, 0.28);
  --text: #fff4d3;
  --text-soft: rgba(255, 244, 211, 0.72);
  --accent: #efd27f;
  --accent-deep: #c9943d;
}

body[data-theme="frost"] {
  --page-bg-a: #071927;
  --page-bg-b: #164d62;
  --panel: rgba(8, 26, 38, 0.84);
  --panel-strong: rgba(11, 37, 50, 0.95);
  --panel-border: rgba(160, 229, 255, 0.34);
  --text: #edfaff;
  --text-soft: rgba(237, 250, 255, 0.72);
  --accent: #a8ecff;
  --accent-deep: #54a6cb;
}

body[data-theme="magma"] {
  --page-bg-a: #1a1010;
  --page-bg-b: #4a1d14;
  --panel: rgba(28, 14, 12, 0.85);
  --panel-strong: rgba(45, 18, 12, 0.95);
  --panel-border: rgba(255, 167, 88, 0.34);
  --text: #fff1df;
  --text-soft: rgba(255, 241, 223, 0.7);
  --accent: #ffb463;
  --accent-deep: #d65f2f;
}

body[data-theme="starlight"] {
  --page-bg-a: #081126;
  --page-bg-b: #18305e;
  --panel: rgba(8, 16, 38, 0.84);
  --panel-strong: rgba(10, 18, 45, 0.95);
  --panel-border: rgba(162, 196, 255, 0.32);
  --text: #eef4ff;
  --text-soft: rgba(238, 244, 255, 0.72);
  --accent: #c8dcff;
  --accent-deep: #7391d8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 0%, color-mix(in srgb, var(--accent) 24%, transparent), transparent 28%),
    radial-gradient(circle at 85% 100%, color-mix(in srgb, var(--accent-deep) 28%, transparent), transparent 26%),
    linear-gradient(155deg, var(--page-bg-b), var(--page-bg-a) 60%, #050c0e);
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow-x: hidden;
}

.shell {
  width: min(1120px, 100%);
}

.hud {
  display: grid;
  grid-template-columns: minmax(140px, 1.1fr) repeat(3, minmax(120px, 0.9fr)) minmax(150px, 0.95fr) minmax(150px, 0.95fr) repeat(2, 88px);
  gap: 10px;
  margin-bottom: 12px;
}

.stat-card,
.select-card,
.icon-button {
  min-height: 76px;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: var(--panel);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
}

.stat-card {
  padding: 12px 14px;
}

.label,
.select-card span {
  display: block;
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0;
  color: var(--text-soft);
}

.value {
  margin: 0;
  font-size: 30px;
  line-height: 1;
  color: var(--accent);
}

.meta {
  margin: 7px 0 0;
  font-size: 13px;
  color: var(--text-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.meter-card {
  min-width: 0;
}

.meter-track {
  height: 13px;
  overflow: hidden;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 38%, transparent);
  background: rgba(0, 0, 0, 0.25);
}

.meter-track span {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent-deep), var(--accent));
  transition: width 180ms ease;
}

.select-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 10px 12px;
}

select {
  width: 100%;
  min-width: 0;
  color: var(--text);
  border: 1px solid color-mix(in srgb, var(--accent) 36%, transparent);
  border-radius: 6px;
  background: var(--panel-strong);
  padding: 8px 9px;
  font: inherit;
}

.icon-button,
.start-button,
.ghost-button {
  cursor: pointer;
  font-weight: 700;
  border-radius: 8px;
  transition: transform 140ms ease, filter 140ms ease, border-color 140ms ease;
}

.icon-button,
.start-button {
  color: #111711;
  border: 0;
  background: linear-gradient(180deg, var(--accent), var(--accent-deep));
}

.icon-button:hover,
.start-button:hover,
.ghost-button:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

.ghost-button {
  min-height: 44px;
  padding: 11px 14px;
  color: var(--text);
  border: 1px solid var(--panel-border);
  background: var(--panel);
}

.ghost-button.small {
  min-height: 38px;
  padding: 8px 12px;
}

.app-screen {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(12px, 2.4vw, 24px);
  overflow: hidden;
  background:
    radial-gradient(circle at 16% 14%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 24%),
    radial-gradient(circle at 82% 76%, color-mix(in srgb, var(--accent-deep) 24%, transparent), transparent 25%),
    linear-gradient(155deg, var(--page-bg-b), var(--page-bg-a) 62%, #050c0e);
}

.app-screen:not(.hidden) .screen-panel {
  animation: sceneIn 220ms ease both;
}

body[data-scene="pause"] .board-wrap,
body[data-scene="result"] .board-wrap {
  filter: saturate(0.86) brightness(0.78);
  transition: filter 180ms ease;
}

@keyframes sceneIn {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.985);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.app-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.18;
  background:
    linear-gradient(115deg, transparent 0 48%, color-mix(in srgb, var(--accent) 22%, transparent) 49% 50%, transparent 51% 100%),
    repeating-linear-gradient(90deg, transparent 0 52px, color-mix(in srgb, var(--accent) 7%, transparent) 53px 54px);
}

.screen-orbit {
  position: absolute;
  width: min(1080px, calc(100vw - 48px));
  height: min(640px, calc(100vh - 48px));
  border-radius: 22px;
  border: 1px solid color-mix(in srgb, var(--accent) 16%, transparent);
  box-shadow:
    inset 0 0 0 10px rgba(0, 0, 0, 0.08),
    inset 0 0 90px rgba(0, 0, 0, 0.32),
    0 0 80px color-mix(in srgb, var(--accent) 13%, transparent);
}

.screen-orbit::before,
.screen-orbit::after {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.screen-orbit::before {
  inset: 22px;
  border-radius: 18px;
  border: 1px dashed color-mix(in srgb, var(--accent) 20%, transparent);
}

.screen-orbit::after {
  width: 18px;
  height: 18px;
  right: 34px;
  top: 34px;
  background: radial-gradient(circle at 35% 30%, #fff7c8, var(--accent) 48%, var(--accent-deep));
  box-shadow: 0 0 20px color-mix(in srgb, var(--accent) 76%, transparent);
}

.screen-panel {
  position: relative;
  width: min(1120px, 100%);
  max-height: calc(100vh - 32px);
  overflow: auto;
  padding: clamp(18px, 2.2vw, 24px);
  border-radius: 12px;
  border: 1px solid var(--panel-border);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--panel-strong) 94%, var(--accent) 6%), var(--panel-strong)),
    var(--panel-strong);
  box-shadow: 0 18px 54px rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(14px);
}

.screen-panel.wide {
  width: min(1120px, 100%);
}

.menu-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 16px;
  min-height: min(620px, calc(100vh - 48px));
}

.menu-hero {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 0;
  padding: clamp(22px, 3vw, 34px);
  overflow: hidden;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  background:
    radial-gradient(circle at 72% 42%, color-mix(in srgb, var(--accent) 20%, transparent), transparent 26%),
    linear-gradient(150deg, rgba(255, 255, 255, 0.045), rgba(0, 0, 0, 0.18));
}

.menu-hero::before {
  content: "";
  position: absolute;
  width: min(32vw, 250px);
  height: min(32vw, 250px);
  right: 28px;
  top: 50%;
  border-radius: 50%;
  transform: translateY(-50%);
  background:
    radial-gradient(circle at 34% 28%, #fff8c9 0 4%, transparent 5%),
    radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--accent) 34%, transparent), transparent 39%),
    conic-gradient(from 18deg, transparent 0 16%, color-mix(in srgb, var(--accent) 30%, transparent) 17% 22%, transparent 23% 48%, color-mix(in srgb, var(--accent-deep) 26%, transparent) 49% 56%, transparent 57% 100%);
  filter: drop-shadow(0 16px 30px rgba(0, 0, 0, 0.3));
}

.menu-hero h1 {
  max-width: 340px;
  margin-bottom: 12px;
  font-size: clamp(38px, 5.2vw, 58px);
  line-height: 0.98;
  letter-spacing: -0.045em;
  text-shadow: 0 10px 28px rgba(0, 0, 0, 0.38);
}

.menu-copy,
.screen-copy {
  max-width: 520px;
  margin: 0;
  color: var(--text-soft);
  line-height: 1.7;
}

.menu-runes {
  display: flex;
  gap: 8px;
  margin-top: 22px;
}

.menu-runes span {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--accent) 48%, transparent);
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.5), transparent 18%),
    linear-gradient(145deg, var(--accent), var(--accent-deep));
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.28);
}

.menu-runes span:nth-child(2) {
  background: linear-gradient(145deg, #5fe38b, #1f7d5b);
}

.menu-runes span:nth-child(3) {
  background: linear-gradient(145deg, #59b5ff, #215f91);
}

.menu-runes span:nth-child(4) {
  background: linear-gradient(145deg, #cf7cff, #6d3c9d);
}

.menu-card {
  align-self: center;
  padding: 18px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--panel) 82%, transparent), rgba(0, 0, 0, 0.16));
}

.primary-action {
  min-height: 52px;
  font-size: 17px;
}

.menu-hints {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  color: var(--text-soft);
  font-size: 13px;
}

.menu-hints span {
  padding: 8px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--panel) 82%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
}

.stage-panel,
.stage-panel {
  width: min(1120px, 100%);
}

.settings-panel {
  width: min(760px, 100%);
}

.screen-actions,
.result-actions {
  display: grid;
  gap: 10px;
}

.screen-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.level-card {
  min-height: 166px;
  position: relative;
  overflow: hidden;
  padding: 17px;
  color: var(--text);
  text-align: left;
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  background:
    radial-gradient(circle at 86% 20%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 24%),
    color-mix(in srgb, var(--panel-strong) 84%, var(--accent) 16%);
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.level-card::after {
  content: "";
  position: absolute;
  right: -20px;
  bottom: -34px;
  width: 116px;
  height: 116px;
  border-radius: 50%;
  border: 1px dashed color-mix(in srgb, var(--accent) 30%, transparent);
}

.level-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 66%, transparent);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.26);
}

.level-card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 17px;
}

.level-card span {
  display: block;
  color: var(--text-soft);
  font-size: 13px;
  line-height: 1.5;
}

.settings-grid {
  display: grid;
  gap: 14px;
}

.setting-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  margin: 0;
  padding: 16px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.14);
  color: var(--text);
}

.setting-row input {
  width: 100%;
}

.settings-note {
  margin-top: 18px;
  display: grid;
  gap: 6px;
  padding: 16px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 18%, transparent);
  background: rgba(0, 0, 0, 0.14);
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.6;
}

.settings-note strong {
  color: var(--accent);
}

.result-stats {
  display: grid;
  gap: 8px;
  margin: 14px 0 18px;
  color: var(--text-soft);
  text-align: left;
}

.result-stats div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid color-mix(in srgb, var(--panel-border) 70%, transparent);
  padding-bottom: 6px;
}

.powerups {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.powerup-button {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 34px;
  align-items: center;
  gap: 8px;
  min-height: 62px;
  padding: 10px 12px;
  color: var(--text);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel-strong) 84%, var(--accent) 16%), var(--panel));
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, opacity 140ms ease;
}

.powerup-button:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 68%, transparent);
}

.powerup-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.powerup-button.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 22%, transparent), 0 10px 24px rgba(0, 0, 0, 0.22);
}

.powerup-key,
.powerup-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1px solid color-mix(in srgb, var(--accent) 42%, transparent);
  background: color-mix(in srgb, var(--panel-strong) 78%, var(--accent) 22%);
  font-weight: 700;
}

.powerup-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 700;
  text-align: left;
}

.board-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  border: 1px solid var(--panel-border);
  box-shadow: 0 18px 54px rgba(0, 0, 0, 0.34);
}

#gameCanvas {
  display: block;
  width: 100%;
  height: auto;
  background: #0b1614;
}

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(3, 9, 12, 0.52);
  padding: 20px;
}

.hidden {
  display: none;
}

.panel {
  width: min(460px, 100%);
  padding: 26px;
  border-radius: 8px;
  border: 1px solid var(--panel-border);
  background: var(--panel-strong);
  text-align: center;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.42);
}

.panel.compact {
  width: min(390px, 100%);
}

.eyebrow {
  margin: 0 0 8px;
  letter-spacing: 0;
  color: var(--text-soft);
  font-size: 12px;
}

h1,
h2 {
  margin: 0 0 12px;
  color: var(--accent);
}

h2 {
  font-size: clamp(30px, 4vw, 46px);
  letter-spacing: -0.04em;
}

.intro {
  margin: 0 0 20px;
  line-height: 1.5;
  color: var(--text);
}

.start-button {
  min-width: 220px;
  padding: 13px 17px;
  border-radius: 8px;
  font-size: 15px;
}

@media (max-width: 880px) {
  .menu-panel {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .menu-hero {
    min-height: 260px;
  }

  .hud {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .icon-button {
    min-height: 60px;
  }

  .powerups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .level-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  body {
    padding: 10px;
  }

  .app-screen {
    padding: 12px;
  }

  .screen-panel,
  .menu-panel {
    padding: 18px;
  }

  .menu-hero {
    min-height: 220px;
    padding: 18px;
  }

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

  .level-card {
    min-height: 126px;
  }

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

  .hud {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .value {
    font-size: 25px;
  }

  .stat-card,
  .select-card {
    min-height: 68px;
  }

  .powerup-button {
    grid-template-columns: 30px minmax(0, 1fr) 30px;
    min-height: 56px;
    padding: 8px 10px;
  }

  .powerup-key,
  .powerup-count {
    width: 25px;
    height: 25px;
  }
}