:root {
  --bg: #071128;
  --bg-deep: #020612;
  --panel: rgba(8, 18, 42, 0.86);
  --panel-strong: rgba(12, 26, 62, 0.96);
  --line: rgba(255, 255, 255, 0.18);
  --text: #f7fbff;
  --muted: #adc0da;
  --red: #ff315f;
  --blue: #2f8cff;
  --white: #f7fbff;
  --gold: #ffd166;
  --cyan: #00f5ff;
  --green: #00ff88;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 15%, rgba(255, 49, 95, 0.22), transparent 28%),
    radial-gradient(circle at 78% 20%, rgba(47, 140, 255, 0.24), transparent 30%),
    linear-gradient(135deg, #071128 0%, #111a39 42%, #050814 100%);
  font-family: Inter, system-ui, sans-serif;
  overflow-x: hidden;
  touch-action: manipulation;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.045) 0 2px, transparent 2px 48px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.035) 0 2px, transparent 2px 48px);
  mask-image: linear-gradient(to bottom, transparent, black 16%, black 88%, transparent);
}

.back-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 80;
  color: var(--white);
  text-decoration: none;
  font-family: "Press Start 2P", monospace;
  font-size: 0.62rem;
  line-height: 1.4;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 999px;
  background: rgba(3, 9, 24, 0.75);
  box-shadow: 0 0 22px rgba(0, 245, 255, 0.16);
}

.shell {
  width: min(1220px, calc(100vw - 24px));
  min-height: 100dvh;
  margin: 0 auto;
  padding: 58px 0 18px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 12px;
}

.game-top {
  display: grid;
  grid-template-columns: minmax(210px, 1fr) minmax(310px, 620px);
  gap: 14px;
  align-items: end;
}

.eyebrow,
.panel-title {
  margin: 0 0 7px;
  color: var(--gold);
  font-family: "Press Start 2P", monospace;
  font-size: 0.62rem;
  line-height: 1.5;
  letter-spacing: 0;
}

h1,
h2 {
  margin: 0;
  font-family: "Press Start 2P", monospace;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  color: var(--white);
  font-size: clamp(1.2rem, 3.1vw, 2.25rem);
  text-shadow: 0 0 18px rgba(0, 245, 255, 0.38), 0 0 34px rgba(255, 49, 95, 0.24);
}

h2 {
  font-size: clamp(1.3rem, 6vw, 2.3rem);
  line-height: 1.25;
}

.hud-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(68px, 1fr));
  gap: 8px;
}

.hud-card,
.target-panel,
.power-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hud-card {
  border-radius: 8px;
  padding: 10px 9px;
  text-align: center;
}

.hud-card span,
.mini-stat span,
.best-row span,
.score-hero span {
  display: block;
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.hud-card strong,
.mini-stat strong,
.best-row strong,
.score-hero strong {
  display: block;
  margin-top: 4px;
  color: var(--white);
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-weight: 900;
}

.play-area {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(160px, 210px) minmax(300px, 1fr) minmax(150px, 190px);
  gap: 12px;
  align-items: center;
}

.target-panel,
.power-panel {
  border-radius: 8px;
  padding: 14px;
}

.targets {
  display: grid;
  gap: 8px;
}

.target {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 9px;
  align-items: center;
  padding: 8px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.target.done {
  border-color: rgba(0, 255, 136, 0.55);
  background: rgba(0, 255, 136, 0.1);
}

.target-piece {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  background: rgba(255, 255, 255, 0.1);
}

.target-label {
  color: var(--text);
  font-weight: 900;
  font-size: 0.88rem;
}

.target-label span {
  display: block;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 800;
}

.meter-wrap {
  margin-top: 16px;
}

.meter-label {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 900;
}

.meter {
  height: 10px;
  margin-top: 7px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.meter-fill {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--white), var(--red), var(--gold));
  box-shadow: 0 0 18px rgba(255, 209, 102, 0.5);
  transition: width 180ms ease;
}

.board-wrap {
  position: relative;
  width: min(100%, calc(100dvh - 154px));
  max-width: 690px;
  aspect-ratio: 1;
  margin: 0 auto;
}

.board {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(8, 1fr);
  gap: clamp(4px, 0.9vw, 8px);
  padding: clamp(7px, 1.1vw, 11px);
  border-radius: 8px;
  border: 2px solid rgba(255, 255, 255, 0.23);
  background:
    linear-gradient(135deg, rgba(255, 49, 95, 0.15), rgba(47, 140, 255, 0.16)),
    rgba(3, 8, 22, 0.76);
  box-shadow: var(--shadow), inset 0 0 46px rgba(0, 245, 255, 0.12);
  user-select: none;
  touch-action: none;
}

.cell {
  position: relative;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 -4px 0 rgba(0, 0, 0, 0.18), 0 4px 12px rgba(0, 0, 0, 0.24);
  transform: translateZ(0);
  transition: transform 120ms ease, filter 120ms ease, box-shadow 120ms ease, opacity 160ms ease;
}

.cell::before {
  content: "";
  position: absolute;
  inset: 9%;
  border-radius: 8px;
  background:
    radial-gradient(circle at 32% 24%, rgba(255, 255, 255, 0.95), transparent 17%),
    linear-gradient(145deg, var(--tile-a), var(--tile-b));
  border: 2px solid rgba(255, 255, 255, 0.44);
  box-shadow: 0 0 18px var(--tile-glow);
}

.cell::after {
  content: attr(data-icon);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--tile-text);
  font-size: clamp(1.15rem, 4.2vw, 2.2rem);
  line-height: 1;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.22);
}

.cell.selected {
  transform: scale(1.05);
  box-shadow: 0 0 0 3px var(--gold), 0 0 24px rgba(255, 209, 102, 0.8);
  z-index: 3;
}

.cell.hint {
  animation: hintPulse 900ms ease-in-out infinite;
}

.cell.clearing {
  opacity: 0;
  transform: scale(0.34) rotate(16deg);
  filter: brightness(1.8);
}

.cell.drop {
  animation: tileDrop 210ms cubic-bezier(0.2, 0.8, 0.25, 1.2);
}

.cell[data-special="row"]::before,
.cell[data-special="col"]::before {
  border-color: var(--gold);
  box-shadow: 0 0 20px rgba(255, 209, 102, 0.7), 0 0 34px var(--tile-glow);
}

.cell[data-special="row"] .none,
.cell[data-special="col"] .none {
  display: none;
}

.cell[data-special="row"]::after {
  content: attr(data-icon) " -";
  font-size: clamp(1rem, 3.6vw, 1.8rem);
}

.cell[data-special="col"]::after {
  content: attr(data-icon) " |";
  font-size: clamp(1rem, 3.6vw, 1.8rem);
}

.cell[data-special="bomb"]::before {
  border-color: var(--white);
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.62), 0 0 40px rgba(255, 49, 95, 0.6);
}

.cell[data-special="bomb"]::after {
  content: "✹";
  color: var(--gold);
}

.float-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  border-radius: 8px;
}

.spark {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--spark-color);
  box-shadow: 0 0 15px var(--spark-color);
  animation: sparkFly 600ms ease-out forwards;
}

.mini-stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.small-btn,
.primary-btn,
.secondary-btn {
  width: 100%;
  border: 0;
  border-radius: 8px;
  font-family: "Press Start 2P", monospace;
  letter-spacing: 0;
  cursor: pointer;
}

.small-btn {
  margin-top: 8px;
  padding: 11px 8px;
  color: #041024;
  background: linear-gradient(135deg, var(--gold), var(--white));
  font-size: 0.62rem;
}

.small-btn-ghost,
.secondary-btn {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.message {
  min-height: 42px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.83rem;
  font-weight: 800;
  line-height: 1.35;
}

.overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 18px;
  background: radial-gradient(circle at 50% 24%, rgba(47, 140, 255, 0.28), rgba(2, 6, 18, 0.9));
  backdrop-filter: blur(7px);
}

.modal {
  width: min(540px, 100%);
  padding: 24px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: var(--panel-strong);
  box-shadow: var(--shadow);
  text-align: center;
}

.modal-copy,
.hint {
  color: var(--muted);
  font-weight: 800;
  line-height: 1.45;
}

.modal-copy {
  margin: 14px 0 16px;
}

.hint {
  margin: 13px 0 0;
  font-size: 0.82rem;
}

.best-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 9px;
  margin: 14px 0;
}

.best-row.three {
  grid-template-columns: repeat(3, 1fr);
}

.best-row div,
.score-hero {
  padding: 12px 8px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.07);
}

.score-hero {
  margin: 15px 0 10px;
}

.score-hero strong {
  color: var(--gold);
  font-size: clamp(2rem, 10vw, 3.6rem);
}

.primary-btn,
.secondary-btn {
  padding: 14px 12px;
  font-size: 0.72rem;
}

.primary-btn {
  color: #031029;
  background: linear-gradient(135deg, var(--red), var(--white) 48%, var(--blue));
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.18);
}

.button-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
  margin-top: 12px;
}

.hidden {
  display: none !important;
}

@keyframes tileDrop {
  from { transform: translateY(-22%) scale(0.96); }
  to { transform: translateY(0) scale(1); }
}

@keyframes hintPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); box-shadow: 0 0 0 3px rgba(255, 209, 102, 0.75); }
}

@keyframes sparkFly {
  from { opacity: 1; transform: translate(0, 0) scale(1); }
  to { opacity: 0; transform: translate(var(--dx), var(--dy)) scale(0.15); }
}

@media (max-width: 940px) {
  .shell {
    width: min(100vw - 16px, 740px);
    padding-top: 54px;
  }

  .game-top {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .brand-block {
    text-align: center;
  }

  .play-area {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .target-panel,
  .power-panel {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 8px 12px;
    align-items: center;
    padding: 10px;
  }

  .target-panel .panel-title,
  .power-panel .panel-title {
    margin: 0;
  }

  .targets {
    grid-template-columns: repeat(3, 1fr);
  }

  .meter-wrap {
    grid-column: 1 / -1;
    margin-top: 0;
  }

  .power-panel {
    grid-template-columns: repeat(4, 1fr);
  }

  .power-panel .panel-title,
  .message {
    grid-column: 1 / -1;
  }

  .mini-stat {
    display: block;
    margin: 0;
    padding: 6px 0;
    text-align: center;
  }

  .small-btn {
    margin: 0;
  }

  .board-wrap {
    width: min(100%, calc(100dvh - 310px));
    min-width: 300px;
  }
}

@media (max-width: 560px) {
  .back-link {
    max-width: 150px;
    font-size: 0.52rem;
    padding: 8px 9px;
  }

  .shell {
    padding-top: 48px;
    gap: 8px;
  }

  .hud-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 5px;
  }

  .hud-card {
    padding: 7px 4px;
  }

  .hud-card span {
    font-size: 0.52rem;
  }

  .hud-card strong {
    font-size: 0.86rem;
  }

  .targets {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 5px;
  }

  .target {
    grid-template-columns: 1fr;
    gap: 3px;
    padding: 5px;
    text-align: center;
  }

  .target-piece {
    width: 34px;
    height: 34px;
    margin: 0 auto;
  }

  .target-label {
    font-size: 0.72rem;
  }

  .target-label span {
    font-size: 0.58rem;
  }

  .power-panel {
    grid-template-columns: repeat(2, 1fr);
  }

  .board-wrap {
    width: min(100%, calc(100dvh - 342px));
    min-width: 286px;
  }

  .board {
    gap: 4px;
    padding: 6px;
  }

  .cell {
    border-radius: 7px;
  }

  .cell::before {
    border-width: 1px;
    border-radius: 7px;
  }

  .modal {
    padding: 18px 14px;
  }

  .button-row,
  .best-row.three {
    grid-template-columns: 1fr;
  }
}

@media (max-height: 700px) and (orientation: landscape) {
  .shell {
    width: min(100vw - 16px, 1120px);
    padding-top: 45px;
  }

  .game-top {
    grid-template-columns: 0.7fr 1fr;
  }

  h1 {
    font-size: 1rem;
  }

  .play-area {
    grid-template-columns: minmax(150px, 190px) minmax(280px, 1fr) minmax(145px, 180px);
  }

  .target-panel,
  .power-panel {
    display: block;
  }

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

  .board-wrap {
    width: min(calc(100dvh - 128px), 56vw);
  }
}