:root {
  --ink: #1c2520;
  --muted: #5f6f67;
  --paper: #f7faf4;
  --panel: #ffffff;
  --soft: #edf5ee;
  --school: #bdddc4;
  --forest: #1d3b13;
  --blue: #2364aa;
  --blue-soft: #dcecff;
  --mango: #f5b44c;
  --mango-soft: #fff1d5;
  --raspberry: #b94766;
  --raspberry-soft: #fde3ea;
  --red: #d84d4d;
  --red-soft: #ffe5e5;
  --line: #d7e2d8;
  --shadow: 0 12px 32px rgba(29, 59, 19, 0.08);
  --radius: 8px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.45;
}

button,
input,
select {
  font: inherit;
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(35, 100, 170, 0.35);
  outline-offset: 2px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px clamp(16px, 4vw, 44px);
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--forest);
  color: #ffffff;
  font-family: var(--mono);
  font-weight: 800;
  flex: 0 0 auto;
}

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

h1 {
  margin-bottom: 2px;
  font-size: clamp(1.25rem, 2.4vw, 1.9rem);
  line-height: 1.1;
}

.brand p,
.mission-intro,
.small-help,
.feedback,
.hint-box,
.solution-box,
.glossary dd {
  color: var(--muted);
}

.brand p {
  margin-bottom: 0;
  max-width: 72ch;
}

.header-actions,
.mission-actions,
.scanner-actions,
.game-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.app-shell {
  width: min(1540px, 100%);
  margin: 0 auto;
  padding: 20px clamp(14px, 3vw, 36px) 36px;
  display: grid;
  grid-template-columns: minmax(320px, 0.78fr) minmax(620px, 1.42fr);
  gap: 16px;
  align-items: start;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.game-panel,
.scanner-panel,
.scanner-stack {
  min-height: 100%;
}

.mission-panel {
  grid-column: 1 / -1;
}

.scanner-stack {
  display: grid;
  gap: 16px;
  align-content: start;
}

.watch-panel,
.glossary-panel,
.log-panel {
  grid-column: span 1;
}

.panel-heading {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--soft);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.panel-heading.compact h2,
.panel-heading h2 {
  margin: 0;
  font-size: 1.05rem;
}

.eyebrow {
  display: block;
  color: var(--forest);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #ffffff;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
}

.status-chip.ok {
  color: var(--forest);
  background: #edf8ec;
  border-color: #bad8b7;
}

.status-chip.warn {
  color: #7c5300;
  background: var(--mango-soft);
  border-color: #e4c072;
}

.status-chip.danger {
  color: #8d2440;
  background: var(--raspberry-soft);
  border-color: #edb8c7;
}

.mission-panel {
  display: grid;
  grid-template-columns: minmax(250px, 0.85fr) minmax(360px, 1.35fr) minmax(280px, 0.95fr);
  gap: 12px 16px;
  padding: 0 16px 16px;
  align-items: start;
}

.mission-panel > .panel-heading {
  grid-column: 1 / -1;
  margin: 0 -16px 0;
}

.mission-panel > *:not(.panel-heading) {
  margin: 0;
}

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

.mission-panel .level-picker {
  grid-column: 1;
  grid-row: 2;
}

.mission-panel .score-panel {
  grid-column: 1;
  grid-row: 3 / span 2;
}

.mission-panel .mission-intro {
  grid-column: 2;
  grid-row: 2;
}

.mission-panel .steps {
  grid-column: 2;
  grid-row: 3 / span 2;
}

.mission-panel .feedback {
  grid-column: 3;
  grid-row: 2;
}

.mission-panel .hint-box {
  grid-column: 3;
  grid-row: 3;
}

.mission-panel .mission-actions {
  grid-column: 3;
  grid-row: 4;
}

.mission-panel .solution-box {
  grid-column: 1 / -1;
  grid-row: 5;
}

.stars-row,
.certificate-stars {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.star-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  min-width: 34px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  color: var(--muted);
  font-weight: 850;
  font-size: 0.82rem;
}

.star-chip.star-green {
  color: var(--forest);
  background: #edf8ec;
  border-color: #b5d8b2;
}

.star-chip.star-empty {
  color: #76817a;
  background: #f5f7f3;
}

.score-panel {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdf8;
}

.score-line {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.score-line strong {
  color: var(--ink);
}

.progress {
  height: 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #edf5ee;
  overflow: hidden;
}

.progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--forest), var(--school));
}

.mission-intro {
  font-size: 1rem;
  margin-bottom: 8px;
}

.steps {
  padding-left: 22px;
  display: grid;
  gap: 7px;
}

.steps li {
  padding-left: 2px;
}

.feedback,
.hint-box,
.solution-box {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdf8;
}

.feedback.success {
  color: var(--forest);
  background: #edf8ec;
  border-color: #b5d8b2;
}

.feedback.warn {
  color: #7c5300;
  background: var(--mango-soft);
  border-color: #e4c072;
}

.feedback.error {
  color: #8d2440;
  background: var(--raspberry-soft);
  border-color: #edb8c7;
}

.hint-box strong {
  color: var(--ink);
}

.hint-box p {
  margin: 4px 0 0;
}

.solution-box {
  border-color: #b8d4f4;
  background: var(--blue-soft);
}

.solution-box strong {
  display: block;
  color: var(--blue);
  margin-bottom: 6px;
}

.solution-box ul {
  margin: 6px 0 0;
  padding-left: 20px;
}

.solution-box li {
  margin: 4px 0;
}

.hint-box.is-locked {
  color: #76817a;
  background: #f5f7f3;
}

.is-hidden {
  display: none !important;
}

.button,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-height: 44px;
  padding: 8px 12px;
  background: #ffffff;
  color: var(--ink);
  cursor: pointer;
  font-weight: 750;
  text-align: center;
  touch-action: manipulation;
}

.button:hover,
.icon-button:hover {
  border-color: var(--blue);
  background: var(--blue-soft);
}

.button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.button.primary {
  color: #ffffff;
  background: var(--blue);
  border-color: var(--blue);
}

.button.primary:hover {
  background: #174f8b;
}

.button.secondary {
  color: var(--blue);
  background: var(--blue-soft);
  border-color: #b8d4f4;
}

.button.success {
  color: #ffffff;
  background: var(--forest);
  border-color: var(--forest);
}

.button.danger {
  color: #ffffff;
  background: var(--raspberry);
  border-color: var(--raspberry);
}

.button.subtle {
  color: var(--muted);
  background: #f7faf4;
}

.button.teacher {
  color: var(--blue);
  background: var(--blue-soft);
  border-color: #b8d4f4;
}

.button.small {
  min-height: 36px;
  padding: 5px 8px;
  font-size: 0.84rem;
}

.icon-button {
  width: 44px;
  padding: 0;
  font-size: 1.15rem;
}

.game-panel,
.scanner-panel,
.watch-panel,
.glossary-panel,
.log-panel {
  display: grid;
  gap: 14px;
}

.game-panel > *:not(.panel-heading),
.scanner-panel > *:not(.panel-heading),
.watch-panel > *:not(.panel-heading),
.glossary-panel > *:not(.panel-heading),
.log-panel > *:not(.panel-heading) {
  margin-left: 16px;
  margin-right: 16px;
}

.game-panel > :last-child,
.scanner-panel > :last-child,
.watch-panel > :last-child,
.glossary-panel > :last-child,
.log-panel > :last-child {
  margin-bottom: 16px;
}

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

.stat {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdf8;
  padding: 10px;
  min-height: 74px;
}

.stat.wide {
  grid-column: 1 / -1;
}

.stat span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat strong {
  display: block;
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 1.45rem;
}

.board-wrap {
  padding: 10px;
  background: #edf5ee;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.game-board {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 5px;
  max-width: 380px;
  margin: 0 auto;
}

.tile {
  aspect-ratio: 1;
  border: 1px solid #cddacb;
  border-radius: 6px;
  background: #ffffff;
  display: grid;
  place-items: center;
  position: relative;
  color: var(--forest);
  font-weight: 900;
  min-width: 0;
  padding: 0;
  cursor: pointer;
  touch-action: manipulation;
}

.tile:focus-visible {
  outline: 3px solid rgba(35, 100, 170, 0.35);
  outline-offset: 1px;
}

.tile.wall {
  background: #d7e2d8;
}

.tile.crystal::after {
  content: "";
  width: 38%;
  aspect-ratio: 1;
  border-radius: 4px;
  background: var(--mango);
  transform: rotate(45deg);
  box-shadow: 0 0 0 2px #ffe0a3 inset;
}

.tile.exit::after {
  content: "";
  width: 48%;
  height: 48%;
  border: 3px solid var(--blue);
  border-radius: 50%;
}

.tile.player::before {
  content: "";
  width: 54%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--blue);
  border: 3px solid #ffffff;
  box-shadow: 0 4px 10px rgba(35, 100, 170, 0.25);
  z-index: 2;
}

.tile.player.crystal::after {
  position: absolute;
  width: 28%;
  right: 8%;
  bottom: 8%;
}

.move-pad {
  display: grid;
  grid-template-columns: repeat(3, 42px);
  gap: 7px;
  justify-content: center;
}

.game-actions {
  justify-content: center;
}

.scanner-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 750;
}

select,
input {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  color: var(--ink);
  min-height: 44px;
  padding: 8px 10px;
}

.scanner-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.small-help {
  margin-top: -6px;
  margin-bottom: 0;
  font-size: 0.9rem;
}

.memory-map {
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 3px;
  padding: 8px;
  background: #f1f5ef;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.mem-cell {
  height: 14px;
  border-radius: 3px;
  background: #cfdad0;
}

.mem-cell.candidate {
  background: var(--blue);
}

.mem-cell.watch {
  background: var(--forest);
}

.mem-cell.changed {
  box-shadow: 0 0 0 2px var(--mango) inset;
}

.mem-cell.selected {
  outline: 2px solid var(--raspberry);
  outline-offset: 1px;
}

.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  max-height: 330px;
}

table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
}

th,
td {
  padding: 8px 9px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #edf5ee;
  color: var(--forest);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

td.mono,
.mono {
  font-family: var(--mono);
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 7px;
  border-radius: 999px;
  background: #eef3ef;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.tag.good {
  color: var(--forest);
  background: #e5f4e4;
}

.watch-list {
  display: grid;
  gap: 8px;
}

.watch-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px;
  background: #fbfdf8;
  display: grid;
  gap: 8px;
}

.watch-card h3 {
  margin: 0;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
  font-size: 0.98rem;
}

.watch-edit {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 6px;
}

.glossary {
  display: grid;
  gap: 8px;
  margin-top: 0;
}

.glossary-dropdown {
  margin: 16px;
}

.glossary-dropdown summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdf8;
  cursor: pointer;
  font-weight: 850;
}

.glossary-dropdown summary::after {
  content: "⌄";
  color: var(--muted);
  font-size: 1.1rem;
}

.glossary-dropdown[open] summary {
  margin-bottom: 10px;
}

.glossary-dropdown[open] summary::after {
  transform: rotate(180deg);
}

.glossary div {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdf8;
  padding: 10px;
}

.glossary dt {
  font-weight: 850;
}

.glossary dd {
  margin: 4px 0 0;
}

.event-log {
  max-height: 220px;
  overflow: auto;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdf8;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.event-log div {
  padding: 4px 0;
  border-bottom: 1px solid var(--line);
}

.dialog-heading {
  margin: 0 -16px 16px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.dialog-heading h2 {
  margin: 0;
}

.certificate-dialog {
  width: min(860px, calc(100vw - 28px));
  border: 0;
  padding: 0;
  background: transparent;
}

.certificate-dialog::backdrop {
  background: rgba(28, 37, 32, 0.48);
}

.certificate-dialog form {
  margin: 0;
}

.certificate-card {
  position: relative;
  min-height: 520px;
  padding: clamp(28px, 5vw, 56px);
  border: 10px solid var(--school);
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(189, 221, 196, 0.34), transparent 46%),
    #ffffff;
  color: var(--ink);
  text-align: center;
  box-shadow: 0 24px 80px rgba(28, 37, 32, 0.28);
}

.certificate-close {
  position: absolute;
  top: 12px;
  right: 12px;
}

.certificate-kicker {
  color: var(--forest);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.certificate-card h2 {
  margin: 10px 0 8px;
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  line-height: 1.05;
}

.certificate-stars {
  justify-content: center;
  margin: 22px 0;
}

.certificate-details {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 18px;
}

.certificate-details div {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdf8;
}

.certificate-note {
  margin: 24px 0 0;
  color: var(--muted);
}

@media (max-width: 1180px) {
  .app-shell {
    grid-template-columns: minmax(300px, 0.78fr) minmax(430px, 1.42fr);
  }

  .mission-panel {
    grid-column: 1 / -1;
  }

  .mission-panel {
    grid-template-columns: minmax(250px, 0.9fr) minmax(360px, 1.1fr);
  }

  .mission-panel .feedback,
  .mission-panel .hint-box,
  .mission-panel .mission-actions,
  .mission-panel .solution-box {
    grid-column: 1 / -1;
    grid-row: auto;
  }
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .scanner-stack,
  .glossary-panel,
  .log-panel {
    grid-column: 1 / -1;
  }

  .mission-panel {
    grid-template-columns: 1fr;
  }

  .mission-panel .level-picker,
  .mission-panel .score-panel,
  .mission-panel .mission-intro,
  .mission-panel .steps,
  .mission-panel .feedback,
  .mission-panel .hint-box,
  .mission-panel .mission-actions,
  .mission-panel .solution-box {
    grid-column: 1;
    grid-row: auto;
  }
}

@media (max-width: 760px) {
  .app-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .scanner-grid,
  .scanner-actions {
    grid-template-columns: 1fr;
  }

  .watch-edit {
    grid-template-columns: 1fr;
  }

  table {
    min-width: 500px;
  }

  .score-line,
  .header-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .header-actions .button {
    width: 100%;
  }

  .certificate-details {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .button,
  .icon-button {
    transition: background-color 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
  }

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