:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --border: #dde2e8;
  --text: #111827;
  --muted: #5f6b7a;
  --primary: #1f2937;
  --primary-strong: #0f172a;
  --success: #16a34a;
  --danger: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Manrope", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.site-shell {
  min-height: 100vh;
}

.topbar {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.topbar-inner {
  max-width: 1000px;
  margin: 0 auto;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 20px;
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
}

.topnav {
  display: flex;
  gap: 8px;
}

.topnav a {
  text-decoration: none;
  color: var(--muted);
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 600;
}

.topnav a:hover,
.topnav a.active {
  color: var(--text);
  background: var(--surface-soft);
  border-color: var(--border);
}

.profile-pill {
  border: 1px solid var(--border);
  background: var(--surface-soft);
  padding: 7px 10px;
  font-size: 0.9rem;
  color: var(--muted);
  border-radius: 4px;
}

.page-wrap {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 20px 30px;
}

h1,
h2,
h3 {
  margin: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
}

h2 {
  margin-bottom: 10px;
  font-size: 1.25rem;
}

h3 {
  margin: 14px 0 0;
  font-size: 1rem;
}

.panel {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 8px;
  padding: 16px;
}

.cta-row {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  font: inherit;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 9px 14px;
  border-radius: 4px;
  text-decoration: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: var(--primary-strong);
  border-color: var(--primary-strong);
}

.btn-secondary:hover {
  background: var(--surface-soft);
}

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

.play-layout {
  display: grid;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
  gap: 14px;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.chip {
  border: 1px solid var(--border);
  background: var(--surface-soft);
  color: var(--text);
  border-radius: 4px;
  padding: 7px 11px;
  font: inherit;
  cursor: pointer;
}

.chip.active,
.chip:hover {
  border-color: #b7c0cb;
  background: #eef2f6;
}

.search-form {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.search-form input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 9px 12px;
  font: inherit;
}

.friends-section,
.friends-search-panel {
  margin-top: 14px;
}

.friends-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.friend-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-soft);
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.friend-main {
  min-width: 0;
}

.friend-username {
  font-weight: 600;
}

.friend-status {
  font-size: 0.9rem;
  color: var(--muted);
}

.status-online {
  color: var(--success);
}

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

.friend-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.friend-note,
.muted {
  color: var(--muted);
}

.join-row {
  margin-top: 8px;
  display: flex;
  gap: 8px;
}

.join-row input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 9px 10px;
  font: inherit;
  text-transform: uppercase;
}

.play-meta {
  margin-top: 12px;
}

.play-meta p {
  margin: 0 0 6px;
}

.board-panel {
  display: grid;
  place-items: center;
}

#chess-canvas {
  width: min(100%, 640px);
  height: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fefefe;
}

.flash-stack {
  margin-bottom: 14px;
  display: grid;
  gap: 8px;
}

.flash {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 6px;
  padding: 10px 12px;
  color: var(--text);
}

.flash.success {
  border-color: #b7dfc3;
  background: #ecfdf3;
}

.flash.error {
  border-color: #f0c2c2;
  background: #fef2f2;
  color: var(--danger);
}

@media (max-width: 700px) {
  .topbar-inner {
    min-height: auto;
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 14px;
  }

  .topnav {
    width: 100%;
    order: 3;
  }

  .topnav a {
    flex: 1;
    text-align: center;
  }

  .page-wrap {
    padding: 16px 14px 24px;
  }

  .search-form {
    flex-direction: column;
  }

  .play-layout {
    grid-template-columns: 1fr;
  }

  .game-stage {
    grid-template-columns: 1fr;
  }

  .join-row {
    flex-direction: column;
  }

  .friend-card {
    flex-direction: column;
    align-items: flex-start;
  }
}

.hidden {
  display: none !important;
}

.play-page {
  display: grid;
  gap: 14px;
}

.code-badge {
  margin-top: 6px;
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  background: var(--surface-soft);
}

.waiting-meta {
  margin-top: 10px;
}

.waiting-meta p {
  margin: 0 0 6px;
}

.game-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 14px;
}

.game-sidebar p {
  margin: 0 0 8px;
}

.captured-row {
  min-height: 28px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-soft);
  padding: 6px 8px;
  font-size: 1.15rem;
}

.fen-box {
  width: 100%;
  min-height: 94px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-soft);
  color: var(--text);
  font:
    0.85rem/1.3 ui-monospace,
    SFMono-Regular,
    Menlo,
    Consolas,
    monospace;
  padding: 8px;
  resize: vertical;
}

.play-modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.42);
  display: grid;
  place-items: center;
  z-index: 30;
  padding: 16px;
}

.play-modal-card {
  width: min(440px, 100%);
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  padding: 14px;
}

@media (max-width: 980px) {
  .game-stage {
    grid-template-columns: 1fr;
  }
}

.captured-piece {
  width: 20px;
  height: 20px;
  object-fit: contain;
  margin-right: 3px;
  vertical-align: middle;
}

.player-strip {
  width: min(100%, 640px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-radius: 8px;
  padding: 8px 10px;
}

.player-main {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.player-name {
  font-weight: 700;
}

.player-time {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 700;
}

.player-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.capture-strip {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
}

.material-pill {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 0.85rem;
  min-width: 36px;
  text-align: center;
}

.move-list-wrap {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface-soft);
  max-height: 280px;
  overflow-y: auto;
}

.move-table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.move-table th,
.move-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}

.move-table thead th {
  background: #eef2f6;
  font-size: 0.85rem;
  color: var(--muted);
  position: sticky;
  top: 0;
}

.move-table tbody tr:last-child td {
  border-bottom: 0;
}

.move-table td:first-child,
.move-table th:first-child {
  width: 48px;
  color: var(--muted);
}

#chess-canvas {
  width: min(100%, 640px);
  aspect-ratio: 1 / 1;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fefefe;
}

@media (max-width: 700px) {
  .player-strip {
    flex-direction: column;
    align-items: flex-start;
  }
}