:root {
  --mint-900: #0f5e57;
  --mint-700: #159186;
  --mint-500: #25b6a7;
  --paper: #fbfffd;
  --paper-soft: #e9faf6;
  --ink: #17332f;
  --muted: #4b6d66;
  --line: #c7e6df;
  --warn: #8a2f12;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Segoe UI", "Trebuchet MS", sans-serif;
  color: var(--ink);
  background: linear-gradient(150deg, var(--mint-900), var(--mint-700));
}

.app-shell {
  min-height: 100dvh;
  width: 100%;
  padding: 0;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  background:
    radial-gradient(circle at 100% 0, rgba(255, 255, 255, 0.18), transparent 35%),
    radial-gradient(circle at 0 100%, rgba(255, 255, 255, 0.12), transparent 30%),
    linear-gradient(165deg, var(--mint-500), var(--mint-700));
}

.top-bar,
.status-grid,
.card-wrapper,
.message-bar {
  width: 100%;
  padding-inline: 14px;
}

.top-bar {
  padding-top: 14px;
  padding-bottom: 8px;
  display: grid;
  gap: 10px;
}

h1 {
  margin: 0;
  color: #ffffff;
  font-size: 29px;
  line-height: 1;
  letter-spacing: 0.01em;
}

.label {
  margin: 0;
  font-size: 10px;
  color: #ddfffa;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.subtle {
  margin: 0;
  color: #e1fffb;
  font-size: 12px;
}

.mode-picker {
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 14px;
  background: rgba(15, 94, 87, 0.24);
  backdrop-filter: blur(2px);
  padding: 10px;
}

.mode-buttons {
  margin-top: 6px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.selected-mode {
  margin: 7px 0 0;
  color: #ffffff;
  font-size: 22px;
  font-weight: 800;
}

.status-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding-bottom: 8px;
}

.status-card {
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background: rgba(15, 94, 87, 0.25);
  padding: 10px;
}

.controls {
  grid-column: 1 / -1;
}

.timer,
.counter {
  margin: 3px 0;
  color: #ffffff;
  font-size: 30px;
  line-height: 1;
  font-weight: 800;
}

.control-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 6px;
}

.btn {
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  padding: 9px 7px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary {
  background: #ffffff;
  color: var(--mint-900);
  border-color: #ffffff;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.mode-btn.active {
  background: #ffffff;
  color: var(--mint-900);
  border-color: #ffffff;
}

.card-wrapper {
  padding-bottom: 10px;
}

.game-card,
.empty-state {
  min-height: 100%;
  border-radius: 18px 18px 0 0;
  border: 2px solid #e0f6f0;
  background: var(--paper);
  padding: 12px;
}

.hidden {
  display: none !important;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 8px;
}

.card-head h2 {
  margin: 0;
  font-size: 22px;
  color: var(--ink);
}

.card-id {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.methods-grid {
  margin-top: 10px;
  display: grid;
  gap: 8px;
}

.method-panel {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper-soft);
  padding: 10px;
  display: grid;
  gap: 8px;
}

.method-panel.active {
  border-color: var(--mint-700);
  box-shadow: inset 0 0 0 1px var(--mint-700);
  background: #d9f7f1;
}

.method-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.method-header h3 {
  margin: 0;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.concept {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.16;
}

.open-tag {
  background: #fddfbf;
  color: #68310d;
  border: 1px solid #ebb27a;
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
}

.forbidden {
  border-top: 1px dashed var(--line);
  padding-top: 8px;
}

.forbidden-title {
  margin: 0;
  color: var(--warn);
  font-size: 12px;
  font-weight: 700;
}

#forbiddenList {
  margin: 6px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 2px;
  color: var(--ink);
  font-size: 14px;
}

.empty-state {
  display: grid;
  place-items: center;
  text-align: center;
}

.message-bar {
  margin: 0;
  padding-block: 8px 12px;
  color: #e9fffb;
  font-size: 12px;
  text-align: center;
}

@media (min-width: 920px) {
  body {
    padding: 20px;
  }

  .app-shell {
    max-width: 440px;
    margin-inline: auto;
    min-height: calc(100dvh - 40px);
    border-radius: 22px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.24);
  }
}