:root {
  --bg: #0d1020;
  --card: rgba(255, 255, 255, 0.08);
  --card-strong: rgba(255, 255, 255, 0.13);
  --text: #f8fbff;
  --muted: #b7c2d8;
  --line: rgba(255, 255, 255, 0.16);
  --laser: #ff4664;
  --success: #58f0a5;
  --warning: #ffbf4d;
  --tile: rgba(255, 255, 255, 0.06);
  --tile-hover: rgba(255, 255, 255, 0.12);
  --selected: #8ad8ff;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(91, 116, 255, 0.34), transparent 34rem),
    radial-gradient(circle at bottom right, rgba(255, 70, 100, 0.22), transparent 30rem),
    var(--bg);
  color: var(--text);
}

button, select {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--card);
  border-radius: 16px;
  padding: 0.82rem 1rem;
  cursor: pointer;
  min-height: 46px;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease;
}

button:hover, button:focus-visible {
  background: var(--card-strong);
  border-color: rgba(255, 255, 255, 0.34);
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

button.primary {
  background: linear-gradient(135deg, #5e7cff, #ff4664);
  border: none;
  font-weight: 800;
}

select {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.58rem 0.85rem;
  color: var(--text);
  background: rgba(0, 0, 0, 0.35);
}

.app-shell {
  width: min(1120px, 94vw);
  margin: 0 auto;
  padding: 22px 0 42px;
}

.topbar,
.mission-card,
.note-card,
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 22px;
}

.eyebrow, .stage-id {
  margin: 0 0 0.2rem;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 800;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  margin-bottom: 0;
  font-size: clamp(1.45rem, 4vw, 2.4rem);
  line-height: 1.08;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.18rem, 3vw, 1.75rem);
}

.language-control {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.88rem;
  white-space: nowrap;
}

.header-controls {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
}

.sound-toggle,
.stage-select-toggle,
.glass-route-link {
  min-height: 40px;
  padding: 0.58rem 0.8rem;
  border-radius: 999px;
  color: var(--muted);
  white-space: nowrap;
}

.glass-route-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: #dff7ff;
  border-color: rgba(94, 196, 255, 0.4);
  background: rgba(94, 196, 255, 0.08);
}

.glass-route-link:hover,
.glass-route-link:focus-visible { background: rgba(94, 196, 255, 0.16); }

.stage-select-toggle {
  color: var(--text);
  border-color: rgba(138, 216, 255, 0.35);
}

.sound-toggle[aria-pressed="false"] {
  opacity: 0.72;
}

.mission-card {
  margin-top: 16px;
  padding: 20px 22px;
}

.mission-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 1rem;
}

.mission-intro {
  margin: 0.8rem 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.challenge-strip {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 191, 77, 0.24);
  border-radius: 16px;
  background: rgba(255, 191, 77, 0.055);
}

.challenge-icon {
  color: var(--warning);
  font-size: 1.35rem;
  filter: drop-shadow(0 0 6px rgba(255, 191, 77, 0.45));
}

.challenge-strip strong {
  display: block;
  margin-bottom: 2px;
  color: #ffe0a1;
  font-size: 0.78rem;
}

.challenge-strip p {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.4;
}

.challenge-status {
  color: var(--warning);
  font-size: 0.75rem;
  font-weight: 800;
  white-space: nowrap;
}

.challenge-strip.complete {
  border-color: rgba(88, 240, 165, 0.38);
  background: rgba(88, 240, 165, 0.07);
}

.challenge-strip.complete .challenge-icon,
.challenge-strip.complete .challenge-status { color: var(--success); }

.stars {
  font-size: clamp(1.4rem, 4vw, 2rem);
  letter-spacing: 0.06em;
  color: var(--warning);
  text-shadow: 0 0 18px rgba(255, 191, 77, 0.42);
  white-space: nowrap;
}

.mission-score {
  display: grid;
  justify-items: end;
  gap: 2px;
  text-align: right;
}

.score-caption {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.campaign-progress {
  margin-top: 3px;
  padding: 4px 8px;
  border: 1px solid rgba(255, 191, 77, 0.24);
  border-radius: 999px;
  color: #ffe0a1;
  background: rgba(255, 191, 77, 0.07);
  font-size: 0.72rem;
  font-weight: 800;
  white-space: nowrap;
}

.game-area {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) 330px;
  gap: 16px;
  margin-top: 16px;
  align-items: start;
}

.board-wrap {
  position: relative;
  background: rgba(0, 0, 0, 0.24);
  border: 1px solid var(--line);
  border-radius: 30px;
  padding: clamp(10px, 2vw, 18px);
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.28), var(--shadow);
}

.effect-layer {
  position: absolute;
  inset: 0;
  z-index: 8;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: inherit;
  pointer-events: none;
}

.effect-banner {
  position: absolute;
  z-index: 2;
  padding: 0.75rem 1.15rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: rgba(10, 15, 30, 0.9);
  font-size: clamp(1rem, 3vw, 1.55rem);
  letter-spacing: 0.04em;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.38);
  animation: effect-banner-pop 1.35s ease-out forwards;
}

.effect-banner.success {
  color: var(--success);
  text-shadow: 0 0 16px rgba(88, 240, 165, 0.75);
}

.effect-banner.alarm {
  color: var(--laser);
  text-shadow: 0 0 16px rgba(255, 70, 100, 0.8);
  animation-duration: 0.75s;
}

.success-particle {
  --particle-angle: 0deg;
  --particle-distance: 100px;
  --particle-delay: 0ms;
  position: absolute;
  left: 50%;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 2px 999px 999px;
  background: var(--success);
  box-shadow: 0 0 10px var(--success);
  opacity: 0;
  transform: translate(-50%, -50%) rotate(var(--particle-angle));
  animation: particle-burst 850ms var(--particle-delay) cubic-bezier(0.16, 0.75, 0.35, 1) forwards;
}

.board {
  width: min(100%, 620px);
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(8, 1fr);
  gap: 7px;
}

.cell {
  position: relative;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.11);
  background: var(--tile);
  border-radius: clamp(8px, 1.4vw, 16px);
  display: grid;
  place-items: center;
  color: var(--text);
  overflow: hidden;
  user-select: none;
  min-width: 0;
  min-height: 0;
}

.cell.mirror {
  cursor: pointer;
  background: rgba(138, 216, 255, 0.09);
}

.cell.mirror:hover { background: var(--tile-hover); }
.cell.mirror:hover,
.cell.mirror:focus-visible { transform: none; }

.cell.selected {
  outline: 3px solid var(--selected);
  box-shadow: 0 0 0 5px rgba(138, 216, 255, 0.18), 0 0 25px rgba(138, 216, 255, 0.3);
}

.object-icon {
  position: relative;
  z-index: 3;
  width: 82%;
  height: 82%;
  overflow: visible;
  filter: drop-shadow(0 4px 7px rgba(0, 0, 0, 0.42));
}

.beam-layer {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
}

.beam-line {
  fill: none;
  stroke: var(--laser);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 5px var(--laser)) drop-shadow(0 0 9px rgba(255, 70, 100, 0.72));
}

.mirror-shadow {
  stroke: #18374b;
  stroke-width: 18;
  stroke-linecap: round;
}

.mirror-glass {
  stroke: #dff7ff;
  stroke-width: 9;
  stroke-linecap: round;
  filter: drop-shadow(0 0 7px #67d7ff);
}

.cell.stowed-mirror {
  background: linear-gradient(145deg, rgba(91, 108, 137, 0.16), rgba(28, 34, 50, 0.8));
  border-style: dashed;
  border-color: rgba(132, 158, 194, 0.38);
}

.mirror-slot {
  fill: none;
  stroke: rgba(142, 174, 214, 0.72);
  stroke-width: 5;
  stroke-linecap: round;
}

.mirror-slot-detail {
  fill: none;
  stroke: rgba(142, 174, 214, 0.46);
  stroke-width: 4;
  stroke-linecap: round;
}

.stowed-badge {
  color: #aabbd4;
  border-color: rgba(142, 174, 214, 0.36);
  background: rgba(13, 20, 34, 0.88);
}

.cell.key-sensor {
  background: radial-gradient(circle, rgba(255, 202, 75, 0.16), rgba(34, 30, 24, 0.72));
  border-color: rgba(255, 202, 75, 0.5);
}

.key-sensor-icon .sensor-ring {
  fill: rgba(255, 202, 75, 0.12);
  stroke: #ffca4b;
  stroke-width: 7;
  filter: drop-shadow(0 0 8px rgba(255, 202, 75, 0.68));
}

.key-head {
  fill: none;
  stroke: #fff0a8;
  stroke-width: 7;
}

.key-mark {
  fill: none;
  stroke: #fff0a8;
  stroke-width: 7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.cell.secondary-key {
  background: radial-gradient(circle, rgba(69, 225, 238, 0.16), rgba(20, 35, 43, 0.72));
  border-color: rgba(69, 225, 238, 0.52);
}

.secondary-key-icon .sensor-ring {
  fill: rgba(69, 225, 238, 0.12);
  stroke: #45e1ee;
  filter: drop-shadow(0 0 8px rgba(69, 225, 238, 0.68));
}

.secondary-key-icon .key-head,
.secondary-key-icon .key-mark {
  stroke: #bdfaff;
}

.mirror-mount {
  fill: #5d7891;
  stroke: #d5e8f2;
  stroke-width: 2;
}

.angle-badge {
  position: absolute;
  right: 4px;
  bottom: 3px;
  z-index: 4;
  padding: 2px 4px;
  border: 1px solid rgba(138, 216, 255, 0.42);
  border-radius: 999px;
  color: #dff7ff;
  background: rgba(8, 20, 38, 0.82);
  font-size: clamp(0.42rem, 1.1vw, 0.62rem);
  font-weight: 800;
  line-height: 1;
}

.laser-body {
  fill: #35435f;
  stroke: #a9bad5;
  stroke-width: 3;
}

.laser-detail {
  fill: none;
  stroke: #7588a8;
  stroke-width: 4;
  stroke-linecap: round;
}

.laser-nozzle { fill: #d4425c; }
.laser-aperture {
  fill: #fff2f4;
  stroke: #ff4664;
  stroke-width: 5;
  filter: drop-shadow(0 0 6px #ff4664);
}

.laser-icon.dir-D { transform: rotate(90deg); }
.laser-icon.dir-L { transform: rotate(180deg); }
.laser-icon.dir-U { transform: rotate(270deg); }

.sensor-ring {
  stroke-width: 8;
  fill: #13283a;
}

.sensor-core { stroke-width: 3; }
.sensor-mark {
  fill: none;
  stroke: white;
  stroke-width: 7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sensor-icon.goal .sensor-ring { stroke: #58f0a5; }
.sensor-icon.goal .sensor-core { fill: #148b58; stroke: #9affc7; }
.sensor-icon.fake .sensor-ring { stroke: #ff4664; }
.sensor-icon.fake .sensor-core { fill: #a51e38; stroke: #ff9aaa; }

.wall-bricks {
  fill: rgba(150, 164, 187, 0.25);
  stroke: #b9c4d5;
  stroke-width: 4;
  stroke-linejoin: round;
}

.cell.wall {
  background:
    linear-gradient(135deg, rgba(255,255,255,0.13), rgba(255,255,255,0.03)),
    repeating-linear-gradient(45deg, rgba(255,255,255,0.10) 0 4px, transparent 4px 9px);
  border-color: rgba(255, 255, 255, 0.2);
}

.cell.laser-source {
  background: rgba(255, 70, 100, 0.16);
  border-color: rgba(255, 70, 100, 0.52);
}

.cell.laser-source.rotatable {
  cursor: pointer;
  background: linear-gradient(145deg, rgba(255, 70, 100, 0.2), rgba(94, 124, 255, 0.12));
}

.cell.laser-source.rotatable:hover,
.cell.laser-source.rotatable:focus-visible {
  border-color: rgba(138, 216, 255, 0.8);
  transform: none;
}

.object-action-badge {
  position: absolute;
  right: 4px;
  top: 4px;
  z-index: 4;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(138, 216, 255, 0.55);
  border-radius: 50%;
  color: #dff7ff;
  background: rgba(8, 20, 38, 0.86);
  font-size: 0.75rem;
  font-weight: 900;
  line-height: 1;
}

.cell.sensor {
  background: rgba(88, 240, 165, 0.09);
  border-color: rgba(88, 240, 165, 0.28);
}

.cell.sensor.active {
  background: rgba(88, 240, 165, 0.24);
  border-color: rgba(88, 240, 165, 0.9);
  box-shadow: 0 0 28px rgba(88, 240, 165, 0.36);
}

.board.success-burst .cell.sensor.active .sensor-icon {
  animation: sensor-unlock 700ms ease-out;
}

.cell.fake-sensor {
  background: rgba(255, 70, 100, 0.08);
  border-color: rgba(255, 70, 100, 0.3);
}

.cell.fake-sensor.alarm {
  background: rgba(255, 70, 100, 0.28);
  box-shadow: 0 0 28px rgba(255, 70, 100, 0.42);
}

.cell.mirror.hit::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 999px;
  border: 2px solid rgba(255, 70, 100, 0.85);
  box-shadow: 0 0 18px rgba(255, 70, 100, 0.7);
  z-index: 2;
}

.panel {
  padding: 18px;
  display: grid;
  gap: 14px;
}

.status-box {
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.20);
  border-radius: 20px;
  padding: 16px;
}

.status-box strong {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 1.1rem;
}

.status-box p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.status-box.success {
  border-color: rgba(88, 240, 165, 0.55);
  box-shadow: 0 0 28px rgba(88, 240, 165, 0.13);
}

.status-box.alarm {
  border-color: rgba(255, 70, 100, 0.6);
  box-shadow: 0 0 28px rgba(255, 70, 100, 0.13);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.stats-grid div {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.05);
  border-radius: 18px;
  padding: 12px 10px;
  text-align: center;
}

.stats-grid span {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  margin-bottom: 0.3rem;
}

.stats-grid strong {
  font-size: 1.15rem;
}

.controls,
.level-controls {
  display: grid;
  gap: 8px;
}

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

.controls button {
  padding-inline: 0.5rem;
  font-size: 0.92rem;
  white-space: nowrap;
}

.mirror-shot-control {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 8px;
}

.mirror-shot-control[hidden] { display: none; }
.mirror-shot-control > div {
  display: grid;
  place-content: center;
  text-align: center;
  border: 1px solid rgba(255, 191, 77, 0.3);
  border-radius: 16px;
  background: rgba(255, 191, 77, 0.07);
}
.mirror-shot-control span { color: var(--muted); font-size: 0.72rem; }
.mirror-shot-control strong { color: var(--warning); }
.mirror-fire-button {
  color: #fff5d7;
  border-color: rgba(255, 191, 77, 0.55);
  background: linear-gradient(135deg, #d47f24, #ff4664);
  font-weight: 900;
}

.objective-tracker {
  display: grid;
  gap: 7px;
  padding: 10px 12px;
  border: 1px solid rgba(138, 216, 255, 0.2);
  border-radius: 16px;
  background: rgba(9, 15, 29, 0.5);
}

.objective-tracker[hidden] { display: none; }
.objective-tracker-label { color: var(--muted); font-size: 0.72rem; font-weight: 800; }
.objective-steps { display: flex; align-items: center; gap: 5px; }
.objective-step { display: flex; min-width: 0; align-items: center; gap: 4px; color: #718099; font-size: 0.72rem; font-weight: 800; }
.objective-symbol { display: grid; width: 19px; height: 19px; place-items: center; border: 1px solid currentColor; border-radius: 50%; font-size: 0.62rem; }
.objective-step.current { color: #fff3b0; }
.objective-step.current .objective-symbol { box-shadow: 0 0 10px rgba(255, 202, 75, 0.48); }
.objective-step.current.objective-q { color: #9af7ff; }
.objective-step.current.objective-s { color: #79f4b5; }
.objective-step.complete { color: #58f0a5; }
.objective-arrow { color: #536078; font-size: 0.8rem; }

.ghost-beam-layer .beam-line {
  stroke: rgba(119, 214, 255, 0.42);
  stroke-width: 6;
  stroke-dasharray: 10 10;
  filter: none;
}

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

#nextBtn.ready,
#nextGlassBtn.ready {
  border-color: rgba(88, 240, 165, 0.78);
  background: rgba(88, 240, 165, 0.14);
  box-shadow: 0 0 18px rgba(88, 240, 165, 0.2);
  animation: next-ready 1.6s ease-in-out infinite;
}

.note-card {
  margin-top: 16px;
  padding: 20px 22px;
}

.note-card h3 { margin-bottom: 0.45rem; }
.note-card p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

body.modal-open { overflow: hidden; }

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: clamp(12px, 3vw, 28px);
  background: rgba(4, 7, 18, 0.8);
  backdrop-filter: blur(10px);
}

.modal-backdrop[hidden] { display: none; }

.stage-select-card {
  width: min(820px, 100%);
  max-height: min(90vh, 760px);
  overflow: auto;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid rgba(138, 216, 255, 0.28);
  border-radius: 28px;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(94, 124, 255, 0.2), transparent 24rem),
    #151a2c;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.6);
  animation: modal-enter 220ms ease-out;
}

.stage-select-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 20px;
}

.stage-select-header h2 { font-size: clamp(1.4rem, 4vw, 2rem); }

.progress-summary {
  margin: 0.55rem 0 0;
  color: var(--muted);
}

.modal-close {
  flex: 0 0 auto;
  width: 44px;
  min-height: 44px;
  padding: 0;
  border-radius: 50%;
  font-size: 1.6rem;
  line-height: 1;
}

.stage-select-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(135px, 1fr));
  gap: 10px;
}

.stage-select-item {
  min-height: 145px;
  padding: 14px;
  border-radius: 18px;
  display: grid;
  grid-template-rows: auto 1fr auto auto auto;
  gap: 8px;
  text-align: left;
  background: rgba(255, 255, 255, 0.055);
}

.stage-select-item:hover,
.stage-select-item:focus-visible { transform: translateY(-2px); }

.stage-select-item-top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.stage-select-item strong {
  align-self: center;
  font-size: 1rem;
  line-height: 1.3;
}

.stage-best-stars {
  color: var(--warning);
  letter-spacing: 0.05em;
}

.stage-best-performance {
  min-height: 1em;
  color: #b9c8dc;
  font-size: 0.72rem;
  font-weight: 750;
}

.stage-select-item small {
  min-height: 1em;
  color: var(--selected);
  font-weight: 700;
}

.stage-select-item.complete {
  border-color: rgba(88, 240, 165, 0.45);
  background: rgba(88, 240, 165, 0.08);
}

.stage-select-item.current {
  outline: 2px solid var(--selected);
  box-shadow: 0 0 20px rgba(138, 216, 255, 0.18);
}

.stage-select-item.locked {
  filter: saturate(0.45);
}

.stage-select-footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 18px;
}

.danger-subtle {
  min-height: 40px;
  padding-block: 0.55rem;
  color: #ff9aaa;
  border-color: rgba(255, 70, 100, 0.25);
  background: rgba(255, 70, 100, 0.06);
}

.chapter-complete-card {
  width: min(560px, 100%);
  padding: clamp(24px, 5vw, 42px);
  border: 1px solid rgba(88, 240, 165, 0.38);
  border-radius: 30px;
  text-align: center;
  color: var(--text);
  background:
    radial-gradient(circle at 50% 0%, rgba(88, 240, 165, 0.2), transparent 20rem),
    radial-gradient(circle at 100% 100%, rgba(94, 124, 255, 0.2), transparent 18rem),
    #151a2c;
  box-shadow: 0 30px 110px rgba(0, 0, 0, 0.65), 0 0 50px rgba(88, 240, 165, 0.08);
  animation: modal-enter 260ms ease-out;
}

.chapter-emblem {
  width: 76px;
  height: 76px;
  margin: 0 auto 18px;
  display: grid;
  place-items: center;
  border: 2px solid var(--success);
  border-radius: 50%;
  color: var(--success);
  background: rgba(88, 240, 165, 0.1);
  font-size: 2.5rem;
  box-shadow: 0 0 30px rgba(88, 240, 165, 0.3);
  animation: chapter-emblem 2.2s ease-in-out infinite;
}

.chapter-complete-card h2 {
  margin-bottom: 0.75rem;
  font-size: clamp(1.65rem, 5vw, 2.4rem);
}

.chapter-complete-text {
  max-width: 42ch;
  margin: 0 auto 22px;
  color: var(--muted);
  line-height: 1.65;
}

.chapter-results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
}

.chapter-results div {
  padding: 15px 12px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.055);
}

.chapter-results span {
  display: block;
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 0.78rem;
}

.chapter-results strong {
  color: var(--warning);
  font-size: 1.35rem;
}

.chapter-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

@keyframes pop {
  0% { transform: scale(0.96); }
  70% { transform: scale(1.02); }
  100% { transform: scale(1); }
}

@keyframes effect-banner-pop {
  0% { opacity: 0; transform: scale(0.65); }
  18% { opacity: 1; transform: scale(1.08); }
  72% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(0.96) translateY(-10px); }
}

@keyframes particle-burst {
  0% { opacity: 0; transform: translate(-50%, -50%) rotate(var(--particle-angle)) translateX(0) scale(0.4); }
  14% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -50%) rotate(var(--particle-angle)) translateX(var(--particle-distance)) scale(0); }
}

@keyframes sensor-unlock {
  0% { transform: scale(0.75) rotate(-12deg); }
  55% { transform: scale(1.22) rotate(6deg); }
  100% { transform: scale(1) rotate(0); }
}

@keyframes alarm-shake {
  0%, 100% { transform: translateX(0); }
  18% { transform: translateX(-8px); }
  36% { transform: translateX(7px); }
  54% { transform: translateX(-5px); }
  72% { transform: translateX(3px); }
}

@keyframes next-ready {
  0%, 100% { box-shadow: 0 0 12px rgba(88, 240, 165, 0.13); }
  50% { box-shadow: 0 0 24px rgba(88, 240, 165, 0.36); }
}

@keyframes modal-enter {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes chapter-emblem {
  0%, 100% { transform: scale(1) rotate(0); box-shadow: 0 0 24px rgba(88, 240, 165, 0.25); }
  50% { transform: scale(1.06) rotate(8deg); box-shadow: 0 0 42px rgba(88, 240, 165, 0.42); }
}

.board.alarm-shake {
  animation: alarm-shake 430ms ease-out;
}

.pulse { animation: pop 260ms ease-out; }

@media (max-width: 860px) {
  .topbar { align-items: flex-start; }
  .game-area { grid-template-columns: 1fr; }
  .panel { grid-row: 2; }
  .board { gap: 5px; }
  .controls button, .level-controls button { padding-inline: 0.7rem; }
}

@media (max-width: 560px) {
  .app-shell { width: min(100vw - 20px, 520px); padding-top: 10px; }
  .topbar { flex-direction: column; padding: 18px; border-radius: 22px; }
  .header-controls { width: 100%; align-items: flex-end; }
  .language-control { width: 100%; }
  select { width: 100%; }
  .sound-toggle { flex: 0 0 auto; }
  .mission-card, .note-card, .panel { border-radius: 22px; }
  .mission-header { align-items: flex-start; }
  .stars { font-size: 1.25rem; }
  .campaign-progress { font-size: 0.65rem; }
  .board-wrap { border-radius: 22px; padding: 8px; }
  .board { gap: 4px; }
  .cell { border-radius: 9px; }
  .controls { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr 1fr; }
  .object-icon { width: 88%; height: 88%; }
  .angle-badge { right: 2px; bottom: 2px; padding: 1px 3px; }
  .stage-select-card { border-radius: 22px; }
  .stage-select-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stage-select-item { min-height: 132px; padding: 12px; }
  .challenge-strip { grid-template-columns: auto 1fr; }
  .challenge-status { grid-column: 2; }
  .chapter-complete-card { border-radius: 24px; }
  .chapter-actions { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .app-shell {
    width: 920px;
    max-width: none;
    padding: 12px 14px 36px;
  }
  .topbar {
    flex-direction: row;
    align-items: center;
  }
  .header-controls {
    width: auto;
    align-items: flex-end;
    justify-content: flex-end;
  }
  .language-control {
    width: auto;
  }
  select {
    width: auto;
  }
  .sound-toggle {
    flex: 0 0 auto;
  }
  .mission-header {
    flex-direction: row;
  }
  .mission-score {
    justify-items: end;
    text-align: right;
  }
  .game-area {
    grid-template-columns: minmax(540px, 1fr) 300px;
  }
  .panel {
    grid-row: auto;
  }
  .board {
    width: min(100%, 620px);
  }
  .controls {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .level-controls,
  .chapter-actions {
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
  }
}