:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-strong: #ffffff;
  --surface-accent: #eef4ff;
  --border: rgba(20, 34, 56, 0.08);
  --text: #132033;
  --text-soft: #5e6c84;
  --primary: #5b7cff;
  --primary-strong: #3f62f4;
  --success: #2fa36b;
  --warning: #ffb347;
  --shadow: 0 18px 54px rgba(20, 34, 56, 0.12);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(91, 124, 255, 0.18), transparent 30%),
    radial-gradient(circle at top right, rgba(47, 163, 107, 0.12), transparent 24%),
    var(--bg);
  color: var(--text);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

code {
  font-family:
    "SFMono-Regular",
    ui-monospace,
    SFMono-Regular,
    Menlo,
    monospace;
}

.app-shell {
  width: min(100%, 72rem);
  margin: 0 auto;
  padding: 1rem 1rem 2.5rem;
}

#app {
  display: grid;
  gap: 1rem;
}

.hero,
.panel,
.notice,
.player-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero,
.panel,
.notice {
  padding: 1rem;
}

.hero,
.panel,
.notice {
  display: grid;
  gap: 1rem;
}

.hero h1,
.topbar h1 {
  margin: 0.25rem 0 0.55rem;
  font-size: clamp(2.2rem, 10vw, 3.8rem);
  line-height: 0.95;
}

.hero p,
.panel p,
.helper,
.lead,
.field span,
dt {
  color: var(--text-soft);
}

.hero p,
.panel p,
.helper,
.lead {
  margin: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--primary-strong);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.mode-switch,
.scoreboard,
.topbar,
.stacked-actions,
.join-box {
  display: grid;
  gap: 1rem;
}

.form-stack {
  display: grid;
  gap: 1.15rem;
}

.action-group {
  display: grid;
  gap: 1rem;
}

.mode-switch {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mode-button,
.primary-button,
.secondary-button,
.ghost-button,
.chip {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.95rem 1rem;
  min-height: 3.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition:
    transform 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.mode-button,
.secondary-button,
.ghost-button,
.chip {
  background: var(--surface-strong);
  border-color: var(--border);
  color: var(--text);
}

.mode-button.is-selected,
.primary-button {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #fff;
  box-shadow: 0 16px 34px rgba(63, 98, 244, 0.28);
}

.primary-button,
.secondary-button,
.ghost-button {
  font-weight: 700;
}

.ghost-button {
  background: transparent;
}

.field {
  display: grid;
  gap: 0.55rem;
}

.field input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.95rem 1rem;
  min-height: 3.25rem;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
  box-shadow: inset 0 1px 2px rgba(20, 34, 56, 0.04);
}

.field input:focus {
  outline: 2px solid rgba(91, 124, 255, 0.28);
  border-color: rgba(91, 124, 255, 0.48);
}

.topbar {
  align-items: start;
}

.panel__header,
.player-card__top {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: flex-start;
}

.panel__header {
  padding-bottom: 0.15rem;
  border-bottom: 1px solid rgba(20, 34, 56, 0.06);
}

.panel__header h2,
.player-card__top h3,
.reveal-box h3 {
  margin: 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background: var(--surface-accent);
  color: var(--primary-strong);
  font-size: 0.82rem;
  font-weight: 800;
}

.notice {
  border-color: rgba(91, 124, 255, 0.22);
  background: #edf4ff;
  color: var(--primary-strong);
  font-weight: 700;
}

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

.stacked-actions > button,
.join-box > button,
.action-group > button,
.panel > .primary-button,
.panel > .secondary-button,
.panel > .ghost-button {
  width: 100%;
}

.helper-block {
  padding-top: 0.15rem;
}

.player-card {
  padding: 1rem;
}

.player-card.is-active {
  background:
    linear-gradient(180deg, rgba(91, 124, 255, 0.12), rgba(255, 255, 255, 0.92));
  border-color: rgba(91, 124, 255, 0.28);
}

.player-card.is-winner {
  border-color: rgba(47, 163, 107, 0.3);
}

.score-grid,
.meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.score-grid dt,
.score-grid dd {
  margin: 0;
}

.score-grid dd {
  font-size: 1.75rem;
  font-weight: 900;
}

.meta-card {
  padding: 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.85);
}

.meta-card span,
.meta-card strong {
  display: block;
}

.meta-card strong {
  margin-top: 0.28rem;
  font-size: 1.05rem;
}

.object-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  max-height: 22rem;
  overflow: auto;
  margin-top: 1rem;
  padding-right: 0.1rem;
}

.chip {
  text-align: left;
  font-weight: 700;
}

.chip:hover,
.mode-button:hover,
.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover {
  transform: translateY(-1px);
}

.chip:disabled,
.mode-button:disabled,
.primary-button:disabled,
.secondary-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.object-grid.is-disabled {
  opacity: 0.72;
}

.reveal-box,
.spotlight-box,
.tip-box,
.subtle-panel {
  margin-top: 1rem;
  padding: 0.95rem 1rem;
  border-radius: var(--radius-md);
}

.spotlight-box {
  border: 1px solid rgba(91, 124, 255, 0.24);
  background:
    linear-gradient(135deg, rgba(91, 124, 255, 0.16), rgba(255, 255, 255, 0.92));
}

.spotlight-box span,
.spotlight-box strong {
  display: block;
}

.spotlight-box span {
  color: var(--primary-strong);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.spotlight-box strong {
  margin-top: 0.35rem;
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  line-height: 1.1;
}

.reveal-box {
  border: 1px solid rgba(255, 179, 71, 0.34);
  background: rgba(255, 246, 220, 0.92);
}

.reveal-box p {
  margin-bottom: 0;
  color: var(--text);
  font-weight: 700;
}

.tip-box {
  border: 1px solid rgba(91, 124, 255, 0.18);
  background: rgba(242, 246, 255, 0.98);
}

.tip-box strong {
  display: block;
  margin-bottom: 0.35rem;
}

.subtle-panel {
  border: 1px dashed var(--border);
  background: rgba(255, 255, 255, 0.72);
}

.empty-state {
  grid-column: 1 / -1;
  margin: 0;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(247, 250, 255, 0.92);
}

@media (min-width: 720px) {
  .app-shell {
    padding: 1.4rem 1.4rem 3rem;
  }

  .topbar {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .scoreboard {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stacked-actions {
    grid-template-columns: repeat(2, minmax(0, max-content));
  }

  .join-box {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .stacked-actions > button,
  .join-box > button,
  .action-group > button,
  .panel > .primary-button,
  .panel > .secondary-button,
  .panel > .ghost-button {
    width: auto;
    min-width: 11rem;
  }

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