:root {
  --bg-deep: #070d1e;
  --bg-dark: #0d1b2a;
  --bg-panel: rgba(16, 37, 66, 0.75);
  --bg-card: rgba(27, 49, 82, 0.65);
  --border-glow: rgba(0, 245, 212, 0.3);
  --border-color: #1e3a5f;
  
  --primary: #00f5d4;
  --primary-glow: rgba(0, 245, 212, 0.4);
  --accent: #38bdf8;
  --accent-navy: #1d3557;
  
  --water-cell: #132a4a;
  --water-cell-hover: #1f4270;
  --water-dot: #48cae4;
  
  --hit-color: #ff0055;
  --hit-glow: rgba(255, 0, 85, 0.5);
  --sunk-color: #b5179e;
  --ship-color: #3a86ff;
  --ship-border: #60a5fa;
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-highlight: #38bdf8;
  
  --success: #10b981;
  --danger: #ef4444;
  
  --cell-size: 38px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;
}

@media (max-width: 900px) {
  :root {
    --cell-size: 30px;
  }
}

@media (max-width: 450px) {
  :root {
    --cell-size: 26px;
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

body {
  font-family: var(--font-main);
  background: radial-gradient(circle at 50% 10%, #11284a 0%, var(--bg-deep) 100%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Background radar effect */
.bg-grid-pattern {
  position: fixed;
  inset: 0;
  background-image: 
    radial-gradient(rgba(0, 245, 212, 0.04) 1px, transparent 1px),
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px, 40px 40px, 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* Header */
header {
  position: relative;
  z-index: 10;
  background: rgba(7, 13, 30, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.radar-logo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  position: relative;
  overflow: hidden;
  box-shadow: 0 0 12px var(--primary-glow);
}

.radar-logo::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  background: conic-gradient(from 0deg, transparent 70%, var(--primary) 100%);
  transform-origin: 0 0;
  animation: radar-sweep 2.5s linear infinite;
}

@keyframes radar-sweep {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.title-wrap h1 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.title-wrap h1 span {
  color: var(--primary);
  text-shadow: 0 0 8px var(--primary-glow);
}

.title-wrap p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Header controls */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.btn:hover:not(:disabled) {
  border-color: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
  transform: translateY(-1px);
}

.btn:active:not(:disabled) {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, #0ea5e9, #00f5d4);
  color: #04101e;
  border: none;
  font-weight: 700;
  box-shadow: 0 0 15px var(--primary-glow);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #38bdf8, #22d3ee);
  box-shadow: 0 0 20px var(--primary-glow);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.4);
  color: #fca5a5;
}

.btn-danger:hover:not(:disabled) {
  background: rgba(239, 68, 68, 0.35);
  border-color: var(--danger);
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.3);
}

.btn-icon {
  padding: 8px 10px;
  font-size: 1rem;
}

/* Main Container */
main {
  position: relative;
  z-index: 1;
  flex: 1;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Status Bar */
.status-bar {
  background: var(--bg-panel);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 12px;
}

.turn-badge {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(0, 245, 212, 0.15);
  border: 1px solid var(--primary);
  color: var(--primary);
}

.turn-badge.opponent {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--danger);
  color: #f87171;
}

.status-message {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
}

.status-stats {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.status-stats span strong {
  color: var(--primary);
}

/* Game Area Views */
.game-view {
  display: none;
}

.game-view.active {
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==================== SETUP VIEW ==================== */
.setup-container {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: flex-start;
  gap: 30px;
  flex-wrap: wrap;
}

.setup-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.setup-controls {
  width: 320px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.setup-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.dock-ships {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dock-ship-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.dock-ship-item:hover {
  border-color: var(--accent);
  background: rgba(56, 189, 248, 0.15);
}

.dock-ship-item.selected {
  border-color: var(--primary);
  background: rgba(0, 245, 212, 0.2);
  box-shadow: 0 0 12px var(--primary-glow);
}

.dock-ship-item.completed {
  opacity: 0.55;
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.1);
}

.dock-ship-item.completed .ship-status {
  color: var(--success);
}

.ship-info-left {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.ship-name {
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.ship-cells-preview {
  display: flex;
  gap: 3px;
  margin-top: 4px;
}

.preview-dot {
  width: 12px;
  height: 12px;
  background: var(--ship-color);
  border-radius: 2px;
}

.ship-status {
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.setup-actions-box {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.setup-orientation-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.25);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.setup-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
  background: rgba(0, 0, 0, 0.2);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent);
}

/* ==================== BATTLE VIEW ==================== */
.battle-container {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 28px;
  flex-wrap: wrap;
}

.board-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  position: relative;
  transition: border-color 0.3s;
}

.board-card.active-target {
  border-color: var(--primary);
  box-shadow: 0 0 25px rgba(0, 245, 212, 0.2);
}

.board-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.board-title {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.board-subtitle {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

/* Fleet mini tracker */
.fleet-tracker {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 4px;
}

.fleet-ship-chip {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.fleet-ship-chip.sunk {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  text-decoration: line-through;
  opacity: 0.7;
}

/* ==================== GRID COMPONENT ==================== */
.grid-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.grid-cols-header {
  display: grid;
  grid-template-columns: repeat(10, var(--cell-size));
  gap: 2px;
  margin-left: 34px; /* 28px row label width + 4px board padding + 2px board border */
  margin-bottom: 4px;
}

.grid-col-label {
  width: var(--cell-size);
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.grid-row-wrap {
  display: flex;
  align-items: flex-start;
}

.grid-rows-header {
  display: grid;
  grid-template-rows: repeat(10, var(--cell-size));
  gap: 2px;
  padding-top: 6px; /* aligns with board border + padding */
}

.grid-row-label {
  width: 28px;
  height: var(--cell-size);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.grid-board {
  display: grid;
  grid-template-columns: repeat(10, var(--cell-size));
  grid-template-rows: repeat(10, var(--cell-size));
  gap: 2px;
  background: rgba(14, 27, 49, 0.95);
  padding: 4px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border-color);
  position: relative;
  box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.5);
}

/* Board Cell */
.cell {
  width: var(--cell-size);
  height: var(--cell-size);
  background: var(--water-cell);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: default;
  transition: background-color 0.15s ease, transform 0.1s ease;
}

/* Radar grid interactivity */
.radar-board .cell {
  cursor: crosshair;
}

.radar-board .cell:not(.hit):not(.miss):not(.sunk):hover {
  background: var(--water-cell-hover);
  box-shadow: inset 0 0 8px var(--primary-glow);
}

/* Hover preview in setup phase */
.cell.preview-valid {
  background: rgba(16, 185, 129, 0.6) !important;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.7);
}

.cell.preview-invalid {
  background: rgba(239, 68, 68, 0.6) !important;
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.7);
}

/* Ship on board styling */
.cell.ship {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  border: 1px solid #60a5fa;
  box-shadow: inset 0 0 6px rgba(147, 197, 253, 0.3);
}

.cell.ship-single {
  border-radius: 50% !important;
}

.cell.ship-bow-h {
  border-top-left-radius: 14px !important;
  border-bottom-left-radius: 14px !important;
}

.cell.ship-stern-h {
  border-top-right-radius: 5px !important;
  border-bottom-right-radius: 5px !important;
}

.cell.ship-bow-v {
  border-top-left-radius: 14px !important;
  border-top-right-radius: 14px !important;
}

.cell.ship-stern-v {
  border-bottom-left-radius: 5px !important;
  border-bottom-right-radius: 5px !important;
}

/* Shot outcomes */
.cell.miss {
  background: #091526;
}

.cell.miss::after {
  content: '';
  width: 9px;
  height: 9px;
  background: #38bdf8;
  border-radius: 50%;
  box-shadow: 0 0 6px #38bdf8;
  animation: popIn 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.cell.miss.auto-surround::after {
  background: #64748b;
  width: 6px;
  height: 6px;
  box-shadow: none;
}

.cell.hit {
  background: rgba(239, 68, 68, 0.35);
  border: 1px solid var(--hit-color);
}

.cell.hit::after {
  content: '💥';
  font-size: calc(var(--cell-size) * 0.58);
  animation: explosionPop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.cell.sunk {
  background: linear-gradient(135deg, rgba(136, 19, 55, 0.8), rgba(88, 28, 135, 0.8));
  border: 1px solid #f43f5e;
}

.cell.sunk::after {
  content: '🔥';
  font-size: calc(var(--cell-size) * 0.65);
  animation: explosionPop 0.35s ease;
}

@keyframes popIn {
  from { transform: scale(0); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

@keyframes explosionPop {
  0% { transform: scale(0.2); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* Battle log sidebar / bottom panel */
.battle-sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 280px;
}

.log-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 380px;
}

.log-header {
  font-size: 0.95rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.log-entries {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
  padding-right: 4px;
}

.log-entries::-webkit-scrollbar {
  width: 4px;
}

.log-entries::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

.log-item {
  font-size: 0.82rem;
  padding: 6px 8px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.25);
  line-height: 1.3;
}

.log-item.hit {
  border-left: 3px solid var(--hit-color);
  color: #fecdd3;
}

.log-item.sunk {
  border-left: 3px solid var(--sunk-color);
  color: #f5d0fe;
  font-weight: bold;
}

.log-item.miss {
  border-left: 3px solid var(--water-dot);
  color: #bae6fd;
}

/* ==================== MODALS & OVERLAYS ==================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 9, 20, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  background: #0d1b2a;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: 100%;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
  position: relative;
}

.modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-body {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-height: 60vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-body strong {
  color: var(--text-main);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 8px;
}

/* Rules list styling */
.rules-list {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rules-list li::marker {
  color: var(--primary);
}

/* Pass device curtain */
.curtain-modal {
  text-align: center;
  align-items: center;
}

.curtain-icon {
  font-size: 3.5rem;
  margin-bottom: 8px;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

/* Winner banner */
.winner-banner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.winner-trophy {
  font-size: 4rem;
  animation: bounce 1s infinite alternate;
}

@keyframes bounce {
  from { transform: translateY(0); }
  to { transform: translateY(-10px); }
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  width: 100%;
  margin: 12px 0;
}

.stat-box {
  background: rgba(0, 0, 0, 0.3);
  padding: 10px;
  border-radius: var(--radius-sm);
  text-align: center;
  border: 1px solid var(--border-color);
}

.stat-val {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-mono);
}

.stat-lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==================== ONLINE LOBBY ==================== */
.online-lobby-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  margin: 20px auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
}

.lobby-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.lobby-header h2 {
  font-size: 1.5rem;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.lobby-header p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.nickname-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 0, 0, 0.25);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.nickname-box label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
  white-space: nowrap;
}

.nickname-box input {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--primary);
  color: var(--text-main);
  font-size: 0.95rem;
  font-weight: 600;
  outline: none;
  padding: 4px 6px;
  width: 100%;
}

.lobby-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  gap: 8px;
}

.lobby-tab-btn {
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-muted);
  padding: 10px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.lobby-tab-btn:hover {
  color: var(--text-main);
}

.lobby-tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background: rgba(0, 245, 212, 0.05);
}

.lobby-tab-content {
  display: none;
  flex-direction: column;
  gap: 16px;
}

.lobby-tab-content.active {
  display: flex;
}

/* Room code box */
.room-code-display {
  background: rgba(0, 0, 0, 0.4);
  border: 2px dashed var(--primary);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.room-code-val {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--primary);
  text-shadow: 0 0 12px var(--primary-glow);
}

.room-actions-row {
  display: flex;
  gap: 10px;
  width: 100%;
  flex-wrap: wrap;
  justify-content: center;
}

.direct-link-preview {
  font-size: 0.8rem;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.3);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--font-mono);
  border: 1px solid var(--border-color);
}

/* Radar waiting animation */
.radar-wait-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 14px;
}

.pulse-radar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pulse-radar::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid var(--primary-glow);
  animation: pulse-ring 1.8s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.7); opacity: 0.8; }
  100% { transform: scale(1.6); opacity: 0; }
}

.pulse-radar span {
  font-size: 1.4rem;
}

.radar-wait-text {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 600;
  animation: blink 1.5s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Join room form */
.join-room-box {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.room-code-input {
  flex: 1;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 10px 14px;
  text-align: center;
  outline: none;
  transition: border-color 0.2s;
}

.room-code-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
}

/* Quick chat reaction bar */
.quick-chat-bar {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
  padding: 6px 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-top: 4px;
}

.chat-reaction-btn {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 3px 10px;
  font-size: 0.8rem;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.15s;
}

.chat-reaction-btn:hover {
  border-color: var(--primary);
  background: rgba(0, 245, 212, 0.15);
  transform: translateY(-1px);
}

/* Online connection badge */
.connection-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.connection-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 6px #10b981;
}

.connection-pill.disconnected {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.4);
}

.connection-pill.disconnected .connection-dot {
  background: #ef4444;
  box-shadow: 0 0 6px #ef4444;
}

/* Toast Notification */
.toast-notice {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #00f5d4;
  color: #04101e;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  z-index: 9999;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast-notice.show {
  transform: translateY(0);
  opacity: 1;
}

/* Footer */
footer {
  text-align: center;
  padding: 14px;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  background: rgba(7, 13, 30, 0.6);
  position: relative;
  z-index: 5;
}