:root {
  --bg: #f5f2ea;
  --paper: #fffdfa;
  --ink: #22201c;
  --muted: #6f6a60;
  --line: #d8d0c2;
  --green: #146c43;
  --yellow: #efc84a;
  --red: #b84b40;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Aptos", "Trebuchet MS", sans-serif;
  letter-spacing: 0;
}

button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  overflow-wrap: anywhere;
  cursor: pointer;
}

button:hover {
  border-color: var(--green);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.app {
  display: grid;
  gap: 14px;
  width: min(1280px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 16px 0 24px;
}

.topbar,
.case,
.result,
.zone {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
}

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

h1 {
  font-family: Georgia, serif;
  font-size: 28px;
}

#roundMeta,
.label,
small {
  color: var(--muted);
  font-size: 13px;
}

.controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.role-pill {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f0eadf;
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

#startBtn {
  border-color: var(--green);
  background: var(--green);
  color: white;
}

#resetBtn {
  border-color: #d8a8a1;
  color: var(--red);
}

#endBtn {
  border-color: var(--ink);
  background: var(--ink);
  color: white;
}

.icon-btn {
  min-width: 42px;
  padding: 0 12px;
  font-size: 18px;
}

#checkBtn {
  border-color: #d9aa1c;
  background: var(--yellow);
  color: var(--ink);
}

.case {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 16px;
  padding: 16px;
}

.label {
  display: block;
  margin-bottom: 6px;
  font-weight: 900;
  text-transform: uppercase;
}

.case h2 {
  margin-bottom: 8px;
  font-size: 22px;
}

.case p {
  line-height: 1.45;
}

.case-side {
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.board {
  display: grid;
  grid-template-columns: 1.1fr repeat(3, 1fr);
  gap: 12px;
  min-height: 430px;
}

.zone {
  display: grid;
  grid-template-rows: auto 1fr;
  min-width: 0;
  padding: 12px;
}

.zone header {
  min-height: 48px;
  margin-bottom: 10px;
}

.cards {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 260px;
  padding: 8px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: #fbf8f0;
}

.zone.is-over .cards {
  border-color: var(--green);
  background: #eef7ef;
}

.card {
  display: grid;
  gap: 5px;
  min-height: 74px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  cursor: grab;
  user-select: none;
}

.card strong {
  font-size: 14px;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.card span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.card.selected {
  border-color: var(--green);
  outline: 3px solid rgba(20, 108, 67, 0.16);
}

.card.correct {
  border-color: var(--green);
  background: #f0faf1;
}

.card.wrong {
  border-color: var(--red);
  background: #fff1ee;
}

.result {
  min-height: 76px;
  padding: 14px 16px;
}

.result strong {
  display: block;
  margin-bottom: 6px;
}

.result-grid {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 12px;
}

.score-box {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbf8f0;
}

.score-box b {
  display: block;
  font-size: 28px;
  line-height: 1.05;
}

.score-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
}

.score-list li {
  line-height: 1.35;
}

.score-list span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.feedback {
  display: grid;
  gap: 10px;
}

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

.feedback h4 {
  margin: 0 0 5px;
  font-size: 13px;
  text-transform: uppercase;
}

.feedback ul {
  display: grid;
  gap: 5px;
  margin: 0;
  padding-left: 18px;
}

.feedback li {
  line-height: 1.35;
}

.muted {
  color: var(--muted);
}

.result.ok {
  border-color: var(--green);
}

.result.bad {
  border-color: var(--red);
}

@media (max-width: 980px) {
  .topbar,
  .controls,
  .case {
    align-items: stretch;
    grid-template-columns: 1fr;
    flex-direction: column;
  }

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

  .role-pill,
  #copyLinkBtn,
  #startBtn,
  #endBtn,
  #resetBtn,
  #checkBtn {
    grid-column: span 2;
  }

  .case-side {
    padding-left: 0;
    padding-top: 12px;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

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

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