/* Design tokens: docs/07-ui-ux.md §2 */
:root {
  --bg: #f7f5f0;
  --surface: #ffffff;
  --surface-2: #efece4;
  --text: #1c1e21;
  --text-sub: #4a4f57;
  --border: #d9d5cb;
  --primary: #2563eb;
  --primary-press: #1d4fd0;
  --primary-text: #ffffff;
  --primary-soft: #dbe7ff;
  --success: #15803d;
  --success-soft: #dcfce7;
  --warning: #b45309;
  --warning-soft: #fef3c7;
  --danger: #b91c1c;
  --danger-soft: #fee2e2;
  --felt: #1f6b4a;
  --wood: #e3b76b;
  --wood-line: #7a5a22;
  --focus: #f59e0b;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  --radius: 12px;
  --radius-lg: 16px;
  --tap: 48px;
  --btn-h: 56px;
  color-scheme: light;
}

:root[data-theme='dark'] {
  --bg: #16181d;
  --surface: #20232a;
  --surface-2: #2a2e37;
  --text: #f2f3f5;
  --text-sub: #b8bcc4;
  --border: #3a3f4a;
  --primary: #5b8def;
  --primary-press: #4a7de0;
  --primary-text: #0b1020;
  --primary-soft: #1e2a44;
  --success: #4ade80;
  --success-soft: #133222;
  --warning: #fbbf24;
  --warning-soft: #3a2c0c;
  --danger: #f87171;
  --danger-soft: #3d1717;
  --felt: #17513a;
  --wood: #b98c45;
  --wood-line: #4a3612;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme='auto'] {
    --bg: #16181d;
    --surface: #20232a;
    --surface-2: #2a2e37;
    --text: #f2f3f5;
    --text-sub: #b8bcc4;
    --border: #3a3f4a;
    --primary: #5b8def;
    --primary-press: #4a7de0;
    --primary-text: #0b1020;
    --primary-soft: #1e2a44;
    --success: #4ade80;
    --success-soft: #133222;
    --warning: #fbbf24;
    --warning-soft: #3a2c0c;
    --danger: #f87171;
    --danger-soft: #3d1717;
    --felt: #17513a;
    --wood: #b98c45;
    --wood-line: #4a3612;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
    color-scheme: dark;
  }
}

/* Font scale setting: 보통 / 크게 / 아주 크게. Everything else is in rem. */
html {
  font-size: 106.25%; /* 17px */
}
html[data-font-scale='large'] {
  font-size: 127.5%;
}
html[data-font-scale='xlarge'] {
  font-size: 148.75%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, system-ui, 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
  font-weight: 500;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 700;
  line-height: 1.3;
}
h1 {
  font-size: 1.65rem;
}
h2 {
  font-size: 1.3rem;
}
h3 {
  font-size: 1.1rem;
}
p {
  margin: 0;
}

button,
input,
select {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ---------- layout ---------- */
.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px 16px calc(120px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 16px;
}

.muted {
  color: var(--text-sub);
}
.small {
  font-size: 0.9rem;
}

/* ---------- buttons ---------- */
.btn {
  min-height: var(--btn-h);
  min-width: var(--tap);
  padding: 0 20px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  font-size: 1.06rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 0.08s ease, background 0.15s ease;
  text-decoration: none;
  user-select: none;
}
.btn:active:not(:disabled) {
  transform: scale(0.98);
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.btn-primary {
  background: var(--primary);
  color: var(--primary-text);
}
.btn-primary:hover:not(:disabled) {
  background: var(--primary-press);
}
.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}
.btn-soft {
  background: var(--primary-soft);
  color: var(--text);
}
.btn-danger {
  background: var(--surface);
  color: var(--danger);
  border-color: var(--danger);
}
.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-block {
  width: 100%;
}
.btn-sm {
  min-height: var(--tap);
  padding: 0 14px;
  font-size: 0.95rem;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  min-height: var(--tap);
  padding: 0 12px;
}

/* ---------- inputs ---------- */
.input {
  min-height: var(--btn-h);
  width: 100%;
  border-radius: var(--radius);
  border: 2px solid var(--border);
  background: var(--surface);
  padding: 0 16px;
  font-size: 1.1rem;
}
.input:focus {
  border-color: var(--primary);
  outline: none;
}
.field-error {
  color: var(--danger);
  font-size: 0.95rem;
}

label.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 700;
}

.segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.segmented button {
  min-height: var(--tap);
  padding: 0 14px;
  border-radius: 999px;
  border: 2px solid var(--border);
  background: var(--surface);
  cursor: pointer;
  font-weight: 600;
}
.segmented button[aria-pressed='true'] {
  border-color: var(--primary);
  background: var(--primary-soft);
  font-weight: 700;
}

/* ---------- top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg);
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 56px;
  padding: 4px 8px;
  padding-top: calc(4px + env(safe-area-inset-top));
  border-bottom: 1px solid var(--border);
}
.topbar-title {
  flex: 1;
  font-weight: 700;
  font-size: 1.05rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- bottom action bar ---------- */
.bottom-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 15;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(6px);
  border-top: 1px solid var(--border);
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
}
.bottom-bar-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  gap: 8px;
}
.bottom-bar-inner > * {
  flex: 1;
}

/* ---------- banners & toasts ---------- */
.conn-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--warning);
  color: #fff;
  text-align: center;
  padding: 8px 12px;
  padding-top: calc(8px + env(safe-area-inset-top));
  font-weight: 700;
}

.toasts {
  position: fixed;
  top: calc(64px + env(safe-area-inset-top));
  left: 50%;
  transform: translateX(-50%);
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(92vw, 420px);
  pointer-events: none;
}
.toast {
  background: var(--text);
  color: var(--bg);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-weight: 600;
  box-shadow: var(--shadow);
  animation: toast-in 0.2s ease;
}
.toast.error {
  background: var(--danger);
  color: #fff;
}
@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
}

/* ---------- sheets / modals ---------- */
.sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  animation: fade 0.15s ease;
}
@media (min-width: 720px) {
  .sheet-backdrop {
    align-items: center;
  }
}
.sheet {
  background: var(--surface);
  width: min(100%, 520px);
  max-height: 88vh;
  overflow: auto;
  border-radius: 20px 20px 0 0;
  padding: 20px 16px calc(20px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: sheet-up 0.2s ease;
}
@media (min-width: 720px) {
  .sheet {
    border-radius: 20px;
  }
}
@keyframes sheet-up {
  from {
    transform: translateY(24px);
    opacity: 0;
  }
}
@keyframes fade {
  from {
    opacity: 0;
  }
}

/* ---------- avatar ---------- */
.avatar {
  border-radius: 50%;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  overflow: hidden;
}
.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--surface-2);
}
.badge.success {
  background: var(--success-soft);
  color: var(--success);
}
.badge.warning {
  background: var(--warning-soft);
  color: var(--warning);
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

/* Icon + small label stacked (keeps text with icons but saves width on phones). */
.icon-btn {
  min-width: var(--tap);
  min-height: var(--tap);
  padding: 2px 8px;
  border: 0;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  border-radius: var(--radius);
  font-size: 1.25rem;
  line-height: 1.1;
  position: relative;
}
.icon-btn .lbl {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-sub);
}
.icon-btn .badge {
  position: absolute;
  top: 0;
  right: 0;
  padding: 0 6px;
  font-size: 0.7rem;
}
.sheet:focus {
  outline: none;
}
.board-wrap {
  position: relative;
  width: 100%;
  max-width: min(100%, calc(100vh - 300px));
  min-width: min(100%, 320px);
  align-self: center;
}

/* =====================================================================
   PC-first layout (docs/07-ui-ux.md §3). Breakpoints: ≥1100 PC, 720–1099 tablet, <720 phone.
   ===================================================================== */
.page {
  max-width: 1280px;
  padding: 24px 24px 48px;
}
@media (max-width: 719px) {
  .page {
    padding: 16px 16px calc(120px + env(safe-area-inset-bottom));
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 64px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.02);
}
.site-header-inner {
  max-width: 1280px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}
.site-nav {
  display: flex;
  gap: 4px;
}
.site-nav a {
  padding: 8px 14px;
  border-radius: 10px;
  color: var(--text-sub);
  font-weight: 700;
  text-decoration: none;
}
.site-nav a:hover {
  background: var(--surface-2);
  color: var(--text);
}
.site-nav a.active {
  color: var(--primary);
  background: var(--primary-soft);
}
.header-join {
  display: flex;
  gap: 6px;
  margin-left: auto;
}
.header-join input {
  width: 150px;
  height: 42px;
  border-radius: 10px;
  border: 2px solid var(--border);
  background: var(--bg);
  padding: 0 12px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
}
.header-join input:focus {
  outline: none;
  border-color: var(--primary);
}
.header-join .btn {
  min-height: 42px;
}
.header-user {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px 4px 4px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
}
.header-user:hover {
  background: var(--surface-2);
}
@media (max-width: 1099px) {
  .site-nav {
    display: none;
  }
}
@media (max-width: 719px) {
  .site-header {
    height: 56px;
  }
  .site-header-inner {
    padding: 0 12px;
    gap: 8px;
  }
  .header-join {
    display: none;
  }
  .site-logo .full {
    display: none;
  }
  .site-logo {
    flex: 1;
  }
}

/* Room bar under the site header */
.room-bar {
  position: sticky;
  top: 64px;
  z-index: 25;
  height: 52px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.room-bar-inner {
  max-width: 1600px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
@media (max-width: 719px) {
  .room-bar {
    top: 56px;
  }
  .room-bar-inner {
    padding: 0 8px;
  }
}

/* Two-column page (lobby, home) */
.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 400px;
  gap: 24px;
  align-items: start;
}
@media (max-width: 1099px) {
  .two-col {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Game screen: board + right panel, fits the viewport height on PC */
.game-layout {
  max-width: 1600px;
  margin: 0 auto;
  padding: 16px 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 20px;
  height: calc(100vh - 64px - 52px);
  min-height: 560px;
}
.game-main {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.game-side {
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: auto;
}
.game-side .chat-panel {
  flex: 1;
  min-height: 220px;
}
@media (max-width: 1099px) {
  .game-layout {
    grid-template-columns: minmax(0, 1fr);
    height: auto;
    padding: 12px;
  }
}

.board-wrap {
  max-width: min(100%, calc(100vh - 64px - 52px - 120px));
  width: 100%;
}
@media (max-width: 1099px) {
  .board-wrap {
    max-width: min(100%, 720px);
  }
}

/* Chat panel (inline on PC) */
.chat-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 12px;
}
.chat-list {
  flex: 1;
  min-height: 120px;
  max-height: 360px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.game-side .chat-list {
  max-height: none;
}
.chat-line {
  font-size: 0.95rem;
  line-height: 1.4;
}
.chat-line strong {
  margin-right: 6px;
}
.emote-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.emote-row button {
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 999px;
  padding: 4px 10px;
  cursor: pointer;
  font-size: 0.9rem;
}
.emote-row button:hover {
  background: var(--surface-2);
}

/* Bottom bar only floats on phones; on wider screens it renders inline. */
@media (min-width: 720px) {
  .bottom-bar.inline-wide {
    position: static;
    background: none;
    backdrop-filter: none;
    border: 0;
    padding: 0;
  }
  .bottom-bar.inline-wide .bottom-bar-inner {
    max-width: none;
  }
}

/* Hover affordances (mouse) */
@media (hover: hover) {
  .btn-secondary:hover:not(:disabled) {
    background: var(--surface-2);
  }
  .game-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  }
}
.game-card {
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.phone-only {
  display: none;
}
@media (max-width: 719px) {
  .phone-only {
    display: initial;
  }
  .wide-only {
    display: none !important;
  }
}

/* Admin: sidebar layout */
.admin-layout {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 24px;
  padding: 24px;
}
.admin-side {
  position: sticky;
  top: 88px;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.admin-side a {
  padding: 12px 16px;
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
}
.admin-side a:hover {
  background: var(--surface-2);
}
.admin-side a.active {
  background: var(--primary);
  color: var(--primary-text);
}
@media (max-width: 899px) {
  .admin-layout {
    grid-template-columns: minmax(0, 1fr);
    padding: 12px;
  }
  .admin-side {
    position: static;
    flex-direction: row;
    overflow-x: auto;
  }
  .admin-side a {
    white-space: nowrap;
  }
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.data-table th,
.data-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.data-table th {
  background: var(--surface-2);
  font-size: 0.9rem;
  color: var(--text-sub);
}
.data-table tr:last-child td {
  border-bottom: 0;
}
.data-table tr.clickable {
  cursor: pointer;
}
.data-table tr.clickable:hover td {
  background: var(--surface-2);
}

/* Page sub-header (TopBar) sits under the site header and scrolls with the page. */
.topbar {
  position: static;
  max-width: 1280px;
  margin: 0 auto;
  background: transparent;
  border-bottom: 0;
  padding: 12px 16px 0;
  min-height: 0;
}
@media (min-width: 720px) {
  .bottom-bar.sticky-save {
    position: sticky;
    bottom: 0;
    left: auto;
    right: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 12px;
  }
  .bottom-bar.sticky-save .bottom-bar-inner {
    max-width: none;
  }
}
.room-bar-inner > *,
.room-bar-inner .btn {
  white-space: nowrap;
  flex-shrink: 0;
}
@media (max-width: 719px) {
  .room-bar-inner {
    gap: 4px;
  }
  .room-bar .rb-game {
    display: none;
  }
  .room-bar .btn-sm {
    padding: 0 8px;
  }
}

.schema-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px 24px;
  align-items: start;
}
.schema-grid > .schema-group {
  grid-column: 1 / -1;
}
.schema-group > .schema-grid,
.schema-group {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.schema-group > legend {
  grid-column: 1 / -1;
}

/* Replay (docs/09 §8): read-only board, step controls in the side panel (PC) or a bottom bar (phone/tablet) */
.replay-readonly {
  display: contents;
}
.replay-readonly button,
.replay-readonly [role='button'],
.replay-readonly svg {
  cursor: default;
}
.replay-controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 12px;
}
.bottom-bar .replay-controls {
  box-shadow: none;
  background: none;
  padding: 0;
}
.replay-count {
  font-size: 1.1rem;
  font-variant-numeric: tabular-nums;
}
.replay-desc {
  margin: 0;
  min-height: 1.4em;
}
.replay-slider {
  width: 100%;
  height: 36px;
  margin: 0;
  accent-color: var(--primary);
}
.replay-buttons {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
}
.replay-buttons .btn {
  min-width: 0;
  min-height: 60px;
  padding: 0 4px;
  flex-direction: column;
  gap: 2px;
  font-size: 0.95rem;
  line-height: 1.1;
}
.replay-buttons .btn span {
  font-size: 1.2rem;
}
.game-layout.replay-narrow {
  padding-bottom: calc(240px + env(safe-area-inset-bottom));
}
.my-games {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.my-game {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
}
.my-game:first-child {
  border-top: 0;
  padding-top: 0;
}