/* Sea Hunter — Card Battle CSS */
:root {
  --bg-deep: #030a1a;
  --bg-surface: #0a1628;
  --bg-card: #0f1f3a;
  --bg-glass: rgba(15, 31, 58, 0.85);
  --accent-cyan: #00e5ff;
  --accent-gold: #ffd54f;
  --accent-red: #ff5252;
  --accent-green: #69f0ae;
  --accent-purple: #b388ff;
  --text-primary: #e0e8f0;
  --text-muted: #7a8ea8;
  --border-glow: rgba(0, 229, 255, 0.3);
  --card-w: 90px;
  --card-h: 130px;
  --slot-w: 100px;
  --slot-h: 140px;
  --radius: 12px;
  --font: 'Outfit', system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  user-select: none;
}

.hidden { display: none !important; }
.screen { width: 100%; min-height: 100vh; }

/* Loading */
#loading-screen {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at bottom, #0a1628 0%, #030a1a 100%);
}
.loader-content { text-align: center; }
.wave-container {
  display: flex; align-items: flex-end; justify-content: center;
  gap: 6px; height: 60px; margin-bottom: 20px;
}
.wave-bar {
  width: 6px; border-radius: 3px;
  background: linear-gradient(to top, var(--accent-cyan), rgba(0,229,255,0.3));
  animation: wave-tween 1.2s ease-in-out infinite;
  animation-delay: calc(var(--i) * 0.1s);
}
@keyframes wave-tween {
  0%, 100% { height: 12px; opacity: 0.4; }
  50% { height: 48px; opacity: 1; }
}
.loader-content h1 { font-size: 2rem; margin-top: 0; color: var(--accent-cyan); }
.progress-track {
  width: 200px; height: 4px; margin: 16px auto 12px;
  background: rgba(255,255,255,0.08); border-radius: 2px; overflow: hidden;
}
.progress-fill {
  height: 100%; width: 0%; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-gold));
  transition: width 0.3s ease;
}
.loader-content p { color: var(--text-muted); margin-top: 8px; font-size: 0.85rem; }

/* Menu */
#main-menu {
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(ellipse at bottom, #0a1628 0%, #030a1a 100%);
  position: relative;
}
.menu-bg {
  position: absolute; inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200"><circle cx="50" cy="50" r="1" fill="%23ffffff10"/><circle cx="150" cy="120" r="1.5" fill="%23ffffff08"/><circle cx="80" cy="170" r="0.8" fill="%23ffffff12"/></svg>') repeat;
  opacity: 0.3;
}
.menu-content { text-align: center; z-index: 1; position: relative; }
.menu-title {
  font-size: 3.5rem; font-weight: 800;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  text-shadow: none;
}
.menu-sub { color: var(--text-muted); font-size: 1.2rem; margin: 8px 0 32px; letter-spacing: 4px; text-transform: uppercase; }

.menu-buttons { display: flex; flex-direction: column; gap: 12px; max-width: 280px; margin: 0 auto; }
.btn-primary, .btn-secondary, .btn-action {
  font-family: var(--font); font-weight: 600; font-size: 1rem;
  border: none; border-radius: var(--radius); padding: 14px 28px;
  cursor: pointer; transition: all 0.2s;
}
.btn-primary {
  background: linear-gradient(135deg, #00b8d4, #0091ea);
  color: white; box-shadow: 0 4px 20px rgba(0,229,255,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 30px rgba(0,229,255,0.5); }
.btn-secondary {
  background: var(--bg-glass); color: var(--text-muted);
  border: 1px solid rgba(255,255,255,0.1);
}
.btn-secondary:disabled { opacity: 0.4; cursor: not-allowed; }

.difficulty-select {
  margin-top: 24px; display: flex; align-items: center; gap: 8px; justify-content: center;
}
.difficulty-select label { color: var(--text-muted); font-size: 0.9rem; }
.diff-btn {
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-muted); padding: 8px 14px; border-radius: 8px;
  cursor: pointer; font-family: var(--font); font-size: 0.85rem; transition: all 0.2s;
}
.diff-btn.active { border-color: var(--accent-cyan); color: var(--accent-cyan); background: rgba(0,229,255,0.1); }

/* Game Screen */
#game-screen { display: flex; flex-direction: column; min-height: 100vh; background: var(--bg-deep); }

/* HUD */
#hud-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px;
  background: var(--bg-glass); backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0,229,255,0.15);
}
.hud-left, .hud-right { display: flex; gap: 16px; align-items: center; }
#round-info { font-weight: 600; color: var(--accent-cyan); }
#score-info { font-weight: 700; font-size: 1.1rem; }
#phase-label {
  font-weight: 700; font-size: 0.85rem; letter-spacing: 3px;
  text-transform: uppercase; color: var(--accent-gold);
  padding: 4px 16px; border-radius: 20px;
  background: rgba(255,213,79,0.1); border: 1px solid rgba(255,213,79,0.3);
}
.btn-icon {
  background: none; border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-primary); font-size: 1.2rem; padding: 6px 10px;
  border-radius: 8px; cursor: pointer; transition: all 0.2s;
}
.btn-icon:hover { border-color: var(--accent-cyan); background: rgba(0,229,255,0.1); }

/* Status */
#status-bar {
  text-align: center; padding: 10px;
  background: linear-gradient(90deg, transparent, rgba(0,229,255,0.05), transparent);
  font-size: 0.95rem; color: var(--accent-cyan);
  min-height: 40px; display: flex; align-items: center; justify-content: center;
}

/* Board */
#board {
  flex: 1; display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  padding: 8px 20px; gap: 4px;
}
.board-section { width: 100%; max-width: 500px; }
.zone-label {
  font-size: 0.7rem; letter-spacing: 2px; text-transform: uppercase;
  color: var(--text-muted); text-align: center; margin: 4px 0;
}
.card-zone {
  display: flex; justify-content: center; gap: 8px;
  padding: 8px; min-height: var(--slot-h);
}

/* Slots */
.slot {
  width: var(--slot-w); height: var(--slot-h);
  border: 2px dashed rgba(255,255,255,0.1);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s; position: relative;
}
.slot.highlight {
  border-color: var(--accent-cyan);
  background: rgba(0,229,255,0.08);
  box-shadow: 0 0 15px rgba(0,229,255,0.2);
}
.slot.target-highlight {
  border-color: var(--accent-red);
  background: rgba(255,82,82,0.08);
  box-shadow: 0 0 15px rgba(255,82,82,0.2);
  animation: pulse-red 1s infinite;
}
@keyframes pulse-red { 0%,100% { box-shadow: 0 0 10px rgba(255,82,82,0.2); } 50% { box-shadow: 0 0 25px rgba(255,82,82,0.4); } }

.slot.dragover { border-color: var(--accent-green); background: rgba(105,240,174,0.1); }

/* Cards */
.card {
  width: var(--card-w); height: var(--card-h);
  border-radius: 10px; cursor: pointer;
  position: relative; perspective: 600px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-4px); }
.card.selected {
  box-shadow: 0 0 20px var(--accent-cyan), 0 0 40px rgba(0,229,255,0.3);
  transform: translateY(-6px);
}
.card.dragging { opacity: 0.5; transform: scale(0.95); }

.card-inner {
  width: 100%; height: 100%;
  position: relative; border-radius: 10px; overflow: hidden;
  transform-style: preserve-3d; transition: transform 0.6s;
}
.card.face-down .card-inner { transform: rotateY(180deg); }

.card-face, .card-back {
  position: absolute; inset: 0;
  backface-visibility: hidden; border-radius: 10px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.card-face {
  background: linear-gradient(145deg, var(--bg-card), #162a4a);
  border: 1px solid rgba(0,229,255,0.2);
  padding: 6px;
}
.card-back {
  background: linear-gradient(145deg, #1a1a3a, #0d0d2a);
  border: 1px solid rgba(255,255,255,0.15);
  transform: rotateY(180deg);
}
.card-back::after {
  content: '⚓'; font-size: 28px; opacity: 0.3;
}

.card-emoji { font-size: 28px; margin-bottom: 4px; }
.card-name { font-size: 0.6rem; font-weight: 600; text-align: center; line-height: 1.1; color: var(--text-primary); }
.card-str {
  font-size: 0.65rem; font-weight: 700; color: var(--accent-gold);
  margin-top: 2px; padding: 1px 6px;
  background: rgba(255,213,79,0.15); border-radius: 4px;
}
.card-abbr {
  position: absolute; top: 3px; left: 5px;
  font-size: 0.55rem; font-weight: 700; color: var(--accent-cyan); opacity: 0.8;
}

/* Card ability badge */
.card-ability {
  font-size: 0.5rem; font-weight: 700;
  color: var(--accent-purple); letter-spacing: 0.5px;
  text-transform: uppercase; text-align: center;
  margin-top: 2px; padding: 1px 4px;
  background: rgba(179,136,255,0.12); border-radius: 3px;
  line-height: 1.2;
  cursor: help;
}

/* Card destruction animation */
.card.destroying {
  animation: card-destroy 0.6s forwards;
}
@keyframes card-destroy {
  0% { transform: scale(1); opacity: 1; }
  40% { transform: scale(1.15) rotate(8deg); filter: brightness(2.5) saturate(2); }
  100% { transform: scale(0) rotate(30deg); opacity: 0; }
}

/* Attack impact pulse on target */
.card.impact {
  animation: card-impact 0.18s ease;
}
@keyframes card-impact {
  0% { transform: scale(1); }
  50% { transform: scale(1.12); filter: brightness(2); }
  100% { transform: scale(1); }
}

/* Impact flash overlay (emoji pop) */
@keyframes impact-pop {
  0%   { transform: translate(-50%,-50%) scale(0) rotate(-10deg); opacity: 1; }
  50%  { transform: translate(-50%,-50%) scale(1.4) rotate(5deg); opacity: 1; }
  100% { transform: translate(-50%,-50%) scale(0.8) rotate(0deg); opacity: 0; }
}

/* Shake (blocked) */
@keyframes shake-anim {
  0%,100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}
.card.shake { animation: shake-anim 0.45s ease; }

/* Shield glow */
.card.shielded {
  box-shadow: 0 0 14px rgba(179,136,255,0.7), 0 0 30px rgba(179,136,255,0.3);
}
.shield-badge {
  position: absolute; top: -10px; right: -8px;
  font-size: 1rem; z-index: 10;
  animation: shield-pulse 1.5s ease-in-out infinite;
}
@keyframes shield-pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.3); } }

/* Combat log entry colors */
.log-entry.log-win  { color: var(--accent-green); }
.log-entry.log-loss { color: #ff7070; }
.log-entry.log-draw { color: var(--accent-gold); }
.log-entry.log-ability { color: var(--accent-purple); }
.log-entry.log-move { color: var(--text-muted); }
.log-entry.log-round { color: var(--accent-cyan); font-weight: 700; border-top: 1px solid rgba(0,229,255,0.2); padding-top: 4px; margin-top: 2px; }

/* Battle Divider + Islands */
.battle-divider {
  display: flex; align-items: center; gap: 12px;
  width: 100%; max-width: 500px; padding: 4px 0;
  color: var(--text-muted); font-size: 0.7rem; letter-spacing: 2px;
  position: relative;
}
.wave { flex: 1; height: 1px; background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent); opacity: 0.3; }

/* Animated SVG islands on the divider */
.island-left, .island-right {
  position: absolute; top: 50%; transform: translateY(-50%);
  opacity: 0.55; pointer-events: none;
}
.island-left { left: 8px; }
.island-right { right: 8px; }
@keyframes island-bob { 0%,100% { transform: translateY(-50%); } 50% { transform: translateY(calc(-50% - 3px)); } }
.island-left { animation: island-bob 3s ease-in-out infinite; }
.island-right { animation: island-bob 3s ease-in-out infinite 1.5s; }

/* Hand */
#hand-area {
  background: var(--bg-glass); backdrop-filter: blur(10px);
  border-top: 1px solid rgba(0,229,255,0.15);
  padding: 12px 20px;
}
.hand-label {
  font-size: 0.7rem; letter-spacing: 2px; text-transform: uppercase;
  color: var(--text-muted); text-align: center; margin-bottom: 8px;
}
.hand-container {
  display: flex; justify-content: center; gap: 8px;
  overflow-x: auto; padding: 4px;
  min-height: 60px;
}
.hand-container .card {
  flex-shrink: 0;
}
.hand-actions {
  display: flex; justify-content: center; gap: 12px; margin-top: 10px;
}
.btn-action {
  font-size: 0.85rem; padding: 10px 20px;
  background: var(--bg-card); color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.15);
}
.btn-action:hover:not(:disabled) { border-color: var(--accent-cyan); background: rgba(0,229,255,0.1); }
.btn-action:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-go {
  background: linear-gradient(135deg, #00b8d4, #0091ea);
  color: white; border: none;
}
.btn-go:disabled { background: var(--bg-card); color: var(--text-muted); border: 1px solid rgba(255,255,255,0.1); }

/* Combat Log */
#combat-log {
  position: fixed; right: 10px; bottom: 200px;
  width: 260px; max-height: 200px;
  background: var(--bg-glass); backdrop-filter: blur(10px);
  border: 1px solid rgba(0,229,255,0.15); border-radius: var(--radius);
  overflow: hidden;
}
.log-header {
  padding: 8px 12px; font-size: 0.75rem; font-weight: 600;
  background: rgba(0,229,255,0.05); border-bottom: 1px solid rgba(0,229,255,0.1);
}
#log-entries {
  padding: 8px 12px; max-height: 160px; overflow-y: auto;
  font-size: 0.75rem; line-height: 1.6;
}
#log-entries .log-entry { border-bottom: 1px solid rgba(255,255,255,0.05); padding: 2px 0; }

/* Modals */
.modal {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.7); backdrop-filter: blur(4px);
}
.modal-content {
  background: var(--bg-surface); border: 1px solid rgba(0,229,255,0.2);
  border-radius: 16px; padding: 24px; max-width: 90vw; max-height: 80vh;
  overflow-y: auto; position: relative;
}
.modal-close {
  position: absolute; top: 12px; right: 12px;
  background: none; border: none; color: var(--text-muted); font-size: 1.2rem;
  cursor: pointer;
}
.modal-content h2 { color: var(--accent-cyan); margin-bottom: 12px; }
.modal-content p { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 8px; }
.legend { font-size: 0.75rem !important; }

/* Matrix Table */
#matrix-table table {
  border-collapse: collapse; font-size: 0.7rem; margin: 12px 0;
}
#matrix-table th, #matrix-table td {
  padding: 4px 6px; text-align: center;
  border: 1px solid rgba(255,255,255,0.08);
}
#matrix-table th {
  background: rgba(0,229,255,0.1); color: var(--accent-cyan);
  font-weight: 600; font-size: 0.65rem;
}
#matrix-table td.win { color: var(--accent-green); }
#matrix-table td.loss { color: var(--accent-red); }
#matrix-table td.draw { color: var(--accent-gold); }
#matrix-table td.none { color: rgba(255,255,255,0.15); }

/* Game Over */
.game-over-content { text-align: center; min-width: 280px; }
.go-icon { font-size: 64px; margin-bottom: 12px; }
.game-over-content h2 { font-size: 1.8rem; }
#go-score { font-size: 2rem; font-weight: 800; color: var(--accent-gold); margin: 8px 0; }
#go-rounds { color: var(--text-muted); margin-bottom: 20px; }
.game-over-content .btn-primary { width: 100%; margin-bottom: 8px; }
.game-over-content .btn-secondary { width: 100%; }

/* Responsive */
@media (max-width: 500px) {
  :root { --card-w: 65px; --card-h: 95px; --slot-w: 72px; --slot-h: 102px; }
  .card-emoji { font-size: 20px; }
  .card-name { font-size: 0.5rem; }
  .menu-title { font-size: 2.2rem; }
  #combat-log { display: none; }
}

/* ── Multiplayer Additions ─────────────────────────────────── */

/* MP live badge in HUD */
.mp-badge {
  display: inline-flex; align-items: center; gap: 4px;
  background: linear-gradient(135deg, #00c853, #00897b);
  color: #fff; font-size: 0.7rem; font-weight: 700;
  padding: 2px 8px; border-radius: 12px;
  animation: pulse-badge 2s ease infinite;
}
.mp-badge.hidden { display: none; }
@keyframes pulse-badge {
  0%,100% { opacity: 1; } 50% { opacity: 0.6; }
}

/* Lobby modal */
.lobby-content {
  max-width: 480px; min-width: 320px;
}
.lobby-section {
  margin: 12px 0; display: flex; flex-direction: column; gap: 6px;
}
.lobby-section label {
  font-size: 0.8rem; color: var(--text-muted, #90a4ae); text-transform: uppercase; letter-spacing: 1px;
}
.lobby-section input, #mp-room-code {
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px; padding: 10px 14px; color: #fff; font-size: 1rem; font-family: inherit;
  outline: none; transition: border 0.2s;
}
.lobby-section input:focus, #mp-room-code:focus {
  border-color: var(--accent, #00c8ff);
}
.lobby-tabs {
  display: flex; gap: 6px; margin: 14px 0 8px;
}
.lobby-tab {
  flex: 1; padding: 8px 4px; background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1); border-radius: 8px;
  color: #aaa; font-size: 0.75rem; font-family: inherit; cursor: pointer; transition: all 0.2s;
}
.lobby-tab.active {
  background: rgba(0,200,255,0.15); border-color: #00c8ff; color: #fff;
}
.lobby-tab-content { margin: 8px 0; }
.lobby-tab-content.hidden { display: none; }
.lobby-desc { color: #aaa; font-size: 0.85rem; margin-bottom: 12px; }
.lobby-btn { width: 100%; margin: 6px 0; }
.room-code-display {
  display: flex; align-items: center; gap: 10px;
  background: rgba(0,200,255,0.1); border: 1px solid rgba(0,200,255,0.3);
  border-radius: 8px; padding: 10px 14px; margin-top: 10px;
  font-size: 0.9rem;
}
.room-code-display strong {
  font-size: 1.4rem; letter-spacing: 3px; color: #00c8ff; flex: 1;
}
.room-code-display.hidden { display: none; }

/* Open rooms list */
.lobby-rooms-header {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.8rem; color: #90a4ae; text-transform: uppercase;
  letter-spacing: 1px; margin-bottom: 8px;
}
.open-rooms-list {
  max-height: 150px; overflow-y: auto; display: flex; flex-direction: column; gap: 6px;
}
.rooms-loading { color: #666; font-size: 0.85rem; text-align: center; padding: 12px; }
.room-row {
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px; padding: 8px 12px; cursor: pointer; transition: background 0.15s;
}
.room-row:hover { background: rgba(0,200,255,0.1); border-color: rgba(0,200,255,0.3); }
.room-row .room-id { font-family: monospace; color: #00c8ff; font-size: 0.9rem; }
.room-row .room-players { color: #aaa; font-size: 0.8rem; }
.room-row .btn-join-open { padding: 4px 10px; font-size: 0.75rem; }

/* Lobby status */
.lobby-status {
  margin-top: 12px; padding: 10px 14px; border-radius: 8px;
  font-size: 0.9rem; text-align: center;
  background: rgba(0,200,255,0.1); border: 1px solid rgba(0,200,255,0.3);
}
.lobby-status.hidden { display: none; }
.lobby-status.error { background: rgba(255,80,80,0.15); border-color: rgba(255,80,80,0.4); color: #ff8080; }
.lobby-status.connecting { color: #ffd54f; }
.lobby-status.waiting { color: #90a4ae; }

/* Waiting for opponent overlay */
#waiting-overlay {
  position: fixed; inset: 0; background: rgba(0,8,20,0.85);
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 16px; z-index: 90;
}
#waiting-overlay.hidden { display: none; }
#waiting-overlay h2 { color: #00c8ff; font-size: 1.4rem; }
#waiting-overlay p  { color: #aaa; font-size: 0.9rem; }
.waiting-spinner {
  width: 40px; height: 40px; border: 3px solid rgba(0,200,255,0.2);
  border-top-color: #00c8ff; border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Turn indicator banner */
.turn-banner {
  position: fixed; top: 56px; left: 50%; transform: translateX(-50%);
  background: rgba(0,200,255,0.18); border: 1px solid rgba(0,200,255,0.4);
  color: #fff; font-size: 0.85rem; font-weight: 600;
  padding: 5px 18px; border-radius: 20px; z-index: 30;
  backdrop-filter: blur(6px); pointer-events: none;
  opacity: 0; transition: opacity 0.3s;
}
.turn-banner.visible { opacity: 1; }

/* Leaderboard */
.leaders-list { margin-top: 12px; display: flex; flex-direction: column; gap: 6px; }
.leader-row {
  display: flex; align-items: center; gap: 12px;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px; padding: 10px 14px;
}
.leader-rank { width: 28px; font-size: 1rem; text-align: center; }
.leader-name { flex: 1; font-weight: 600; }
.leader-score { color: #ffd54f; font-weight: 700; font-size: 0.95rem; }
.leader-games { color: #666; font-size: 0.8rem; }

/* ── Islands ───────────────────────────────────────────────── */
.islands-zone {
  display: flex; justify-content: center; gap: 8px;
  padding: 4px; min-height: 40px;
}
.island-card {
  width: 45px; height: 45px;
  border-radius: 50%;
  border: 1px solid rgba(0,229,255,0.3);
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-card); cursor: pointer;
}
.island-card.mine {
  border-color: var(--accent-green);
  box-shadow: 0 0 10px rgba(105,240,174,0.3);
}
.island-card.active {
  width: 60px; height: 60px;
  border-color: var(--accent-gold);
  box-shadow: 0 0 20px rgba(255,213,79,0.5);
}
#active-island-container {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
}