/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --bg2: #1a1d27;
  --bg3: #22263a;
  --border: #2e3350;
  --accent: #4f8ef7;
  --accent2: #e05c5c;
  --green: #4caf74;
  --yellow: #f0c040;
  --text: #e8eaf0;
  --text2: #8b90a8;
  --radius: 10px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  min-height: 100vh;
}

.hidden { display: none; }

a { color: inherit; text-decoration: none; }

/* ── Lobby ── */
.lobby-wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 40px 16px 80px;
}

.logo {
  text-align: center;
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--accent);
}

.subtitle {
  text-align: center;
  color: var(--text2);
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.online-count {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text2);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
}

.online-count strong {
  color: var(--text);
  font-weight: 700;
}

.online-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  flex-shrink: 0;
}

.auto-refresh-hint {
  font-size: 0.72rem;
  color: var(--text2);
  opacity: 0.55;
  font-weight: 400;
}

.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.card h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  color: var(--text2);
  margin-bottom: 5px;
}

.form-group .hint {
  font-size: 0.75rem;
  color: var(--text2);
}

.form-group input,
.form-group select {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 12px;
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238b90a8' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.input-row {
  display: flex;
  gap: 8px;
}

.input-row input { flex: 1; }

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 16px 0;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  border-radius: 6px;
  border: none;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }
.btn:hover { opacity: 0.9; }

.btn-primary { background: var(--accent); color: #fff; width: 100%; margin-top: 4px; }
.btn-secondary { background: var(--bg3); color: var(--text); border: 1px solid var(--border); }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; background: var(--bg3); color: var(--text); border: 1px solid var(--border); }

/* ── Room list ── */
.room-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 0.85rem;
  color: var(--text2);
}

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

.room-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 14px;
}

.room-info { flex: 1; }
.room-title { font-weight: 600; display: block; }
.room-meta { font-size: 0.78rem; color: var(--text2); }
.room-code { font-size: 0.78rem; font-family: monospace; color: var(--accent); background: var(--bg2); padding: 2px 8px; border-radius: 4px; }

.empty { color: var(--text2); font-size: 0.88rem; text-align: center; padding: 12px 0; }

.turn-order-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.radio-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  transition: border-color 0.15s;
}

.radio-label:has(input:checked) {
  border-color: var(--accent);
  color: var(--accent);
}

.radio-label input[type="radio"] {
  accent-color: var(--accent);
}

.error-msg {
  color: var(--accent2);
  text-align: center;
  min-height: 1.4em;
  font-size: 0.88rem;
  margin-top: 8px;
}

/* ── Game layout ── */
.game-wrap {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  gap: 12px;
  flex-shrink: 0;
}

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

.room-title-header {
  font-weight: 700;
  font-size: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.code-badge {
  font-size: 0.75rem;
  font-family: monospace;
  color: var(--accent);
  background: var(--bg3);
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.header-right { flex-shrink: 0; }

/* ── Turn banner ── */
.turn-banner {
  flex: 1;
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
  padding: 8px 16px;
  border-radius: 6px;
  transition: background 0.3s, color 0.3s;
}

.turn-banner.waiting    { background: var(--bg3); color: var(--text2); }
.turn-banner.my-turn    { background: #1b3a2b; color: var(--green); }
.turn-banner.opp-turn   { background: var(--bg3); color: var(--text2); }
.turn-banner.finished   { background: var(--bg3); color: var(--text2); }

.turn-banner.mine-flash { background: #3a1b1b !important; color: var(--accent2) !important; }

/* ── Score panel ── */
.score-panel {
  display: flex;
  gap: 8px;
}

.score-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 12px;
  min-width: 70px;
  transition: border-color 0.2s;
}

.score-card.me { border-color: var(--accent); }
.score-card.active-turn { border-color: var(--green); background: #1b3a2b; }

.score-name { font-size: 0.72rem; color: var(--text2); white-space: nowrap; }
.score-val  { font-size: 1.1rem; font-weight: 800; color: var(--text); }

/* ── Board ── */
.board-container {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.board {
  display: grid;
  gap: 2px;
  user-select: none;
}

.cell {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  font-weight: 700;
  transition: background 0.1s, transform 0.07s;
  cursor: default;
}

.cell.hidden    { display: flex; background: var(--bg3); border: 1px solid var(--border); }
.cell.clickable { cursor: pointer; }
.cell.clickable:hover { background: #2e3558; transform: scale(1.06); }

.cell.opened    { background: var(--bg2); border: 1px solid #1a1d27; color: var(--text2); }
.cell.mine-hit  { background: #3a1b1b; }
.cell.flagged   { background: #1e2e1e; border: 1px solid #3a6a3a; }
.cell.revealed-mine { background: #2a1a1a; }

.cell.last-cell { box-shadow: inset 0 0 0 2px var(--yellow); }

.cell.n1 { color: #4f8ef7; }
.cell.n2 { color: #4caf74; }
.cell.n3 { color: #e05c5c; }
.cell.n4 { color: #9c4fe0; }
.cell.n5 { color: #e07850; }
.cell.n6 { color: #40c0c0; }
.cell.n7 { color: #f0c040; }
.cell.n8 { color: #a0a0a0; }

/* ── Invite bar (game page, waiting state) ── */
.invite-bar {
  background: #0d1e14;
  border-bottom: 1px solid #1e3d28;
  padding: 7px 16px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.invite-bar.hidden { display: none; }

.invite-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--green);
  white-space: nowrap;
  flex-shrink: 0;
}

.invite-url {
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 10px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  user-select: all;
}

/* ── Join page ── */
.join-room-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.join-room-title {
  font-size: 1.15rem;
  font-weight: 700;
  flex: 1;
}

.join-room-settings { margin-bottom: 4px; }

.join-setting-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.join-setting-item {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.join-setting-label {
  font-size: 0.72rem;
  color: var(--text2);
}

.join-setting-val {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
}

.join-error-icon { font-size: 2.8rem; margin-bottom: 12px; }

.join-error-msg {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent2);
  margin-bottom: 8px;
}

.join-countdown {
  font-size: 0.85rem;
  color: var(--text2);
}

/* ── Rules bar ── */
.rules-bar {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 7px 16px;
  flex-shrink: 0;
  overflow-x: auto;
}

.rules-items {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  font-size: 0.78rem;
  color: var(--text2);
  min-width: max-content;
}

.rule-item { display: inline-flex; align-items: center; gap: 6px; }

.rule-sep { color: var(--border); user-select: none; }

.key {
  display: inline-block;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 7px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}

.c-green  { color: var(--green); }
.c-red    { color: var(--accent2); }
.c-yellow { color: var(--yellow); }

/* ── Turn timer ── */
.turn-timer {
  font-size: 0.9rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 6px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  white-space: nowrap;
  min-width: 64px;
  text-align: center;
}

.turn-timer.hidden { display: none; }

.turn-timer.warn {
  background: #2e1e00;
  border-color: var(--yellow);
  color: var(--yellow);
  animation: timer-pulse 0.6s ease-in-out infinite alternate;
}

.turn-timer.critical {
  background: #3a1b1b;
  border-color: var(--accent2);
  color: var(--accent2);
  animation: timer-pulse 0.3s ease-in-out infinite alternate;
}

@keyframes timer-pulse {
  from { opacity: 1; }
  to   { opacity: 0.5; }
}

/* ── Timer warning overlay ── */
.timer-warning {
  position: fixed;
  top: 50%;
  right: 28px;
  transform: translateY(-50%);
  padding: 18px 22px;
  border-radius: 14px;
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.1;
  z-index: 60;
  pointer-events: none;
  text-align: center;
  white-space: pre;
  background: rgba(46, 30, 0, 0.95);
  border: 2px solid var(--yellow);
  color: var(--yellow);
  animation: warn-pop 0.6s ease-in-out infinite alternate;
}

.timer-warning.critical {
  background: rgba(58, 27, 27, 0.97);
  border-color: var(--accent2);
  color: var(--accent2);
  animation: warn-pop 0.3s ease-in-out infinite alternate;
}

.timer-warning.hidden { display: none; }

@keyframes warn-pop {
  from { transform: translateY(-50%) scale(1);    box-shadow: 0 0 0 rgba(224,92,92,0); }
  to   { transform: translateY(-50%) scale(1.08); box-shadow: 0 0 24px rgba(224,92,92,0.45); }
}

/* ── Mine counter ── */
.mine-counter {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text2);
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 12px;
  white-space: nowrap;
}

/* ── Flag toast ── */
.flag-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  z-index: 50;
  transition: opacity 0.3s;
  pointer-events: none;
}

.flag-toast.hidden  { display: none; }
.flag-toast.correct { background: #1b3a2b; color: var(--green); border: 1px solid var(--green); }
.flag-toast.wrong   { background: #3a1b1b; color: var(--accent2); border: 1px solid var(--accent2); }

/* ── Game overlay ── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.overlay.hidden { display: none; }

.overlay-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 48px;
  text-align: center;
  min-width: 280px;
}

.overlay-title {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 20px;
}

.overlay-title.win  { color: var(--green); }
.overlay-title.lose { color: var(--accent2); }
.overlay-title.draw { color: var(--yellow); }

.overlay-scores { margin-bottom: 24px; }

.final-score {
  font-size: 1rem;
  padding: 4px 0;
  color: var(--text2);
}

.final-score.winner { color: var(--green); font-weight: 700; }

/* ── Mode selector (index page) ── */
.mode-select-group {
  display: flex;
  gap: 10px;
}

.mode-card {
  flex: 1;
  cursor: pointer;
}

.mode-card input[type="radio"] {
  display: none;
}

.mode-card-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 10px;
  background: var(--bg3);
  border: 2px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.15s, background 0.15s;
  text-align: center;
}

.mode-card input[type="radio"]:checked + .mode-card-inner {
  border-color: var(--accent);
  background: #151b35;
}

.mode-icon { font-size: 1.6rem; }
.mode-name { font-size: 0.92rem; font-weight: 700; color: var(--text); }
.mode-desc { font-size: 0.75rem; color: var(--text2); }

/* ── Coop wait bar (game page) ── */
.coop-wait-bar {
  background: #0d1e2e;
  border-bottom: 1px solid #1e3050;
  padding: 7px 16px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text2);
}

.coop-wait-bar.hidden { display: none; }

.coop-player-count {
  font-weight: 600;
  color: var(--accent);
}

/* ── Coop turn banner variant ── */
.turn-banner.coop-playing { background: #1b2a3a; color: var(--accent); }

/* ── AI 생각 중 배너 ── */
.turn-banner.ai-thinking {
  background: #1a1f35;
  color: var(--accent);
  animation: ai-pulse 1.2s ease-in-out infinite alternate;
}

@keyframes ai-pulse {
  from { opacity: 1; }
  to   { opacity: 0.55; }
}

/* ── AI 대결 토글 (로비 배틀 설정) ── */
.toggle-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 14px;
  transition: border-color 0.15s;
  user-select: none;
}

.toggle-row:has(input:checked) {
  border-color: var(--accent);
  background: #151b35;
}

.toggle-row input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.toggle-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

/* ── Score panel compact (4 players) ── */
.score-panel.compact .score-card {
  min-width: 54px;
  padding: 3px 8px;
}

.score-panel.compact .score-name { font-size: 0.68rem; }
.score-panel.compact .score-val  { font-size: 0.95rem; }

/* ── Mine hit counter (coop) ── */
.hit-counter {
  font-size: 0.9rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 6px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  white-space: nowrap;
}

.hit-counter.danger {
  background: #3a1b1b;
  border-color: var(--accent2);
  color: var(--accent2);
}

/* ── Room list mode badge ── */
.room-mode-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 4px;
  white-space: nowrap;
}

.room-mode-badge.battle { background: #1b2a3a; color: var(--accent); border: 1px solid var(--accent); }
.room-mode-badge.coop   { background: #1b3a2b; color: var(--green);  border: 1px solid var(--green);  }

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg2);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  font-size: 0.75rem;
  color: var(--text2);
}

.site-footer a {
  color: var(--text2);
  transition: color 0.15s;
}

.site-footer a:hover {
  color: var(--text);
}

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

.footer-ver {
  font-family: monospace;
  font-size: 0.7rem;
  background: var(--bg3);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--text2);
}

.footer-sep {
  color: var(--border);
  user-select: none;
}

/* 게임 페이지: 더 컴팩트한 footer */
.game-wrap .site-footer {
  padding: 5px 16px;
  font-size: 0.7rem;
}