/* ============================================
   地震逃生1分钟 — 全局共享样式
   像素冒险闯关风 / 8-bit 美学 / 亮绿配色
   ============================================ */

/* --- 像素字体 (Press Start 2P 内联模拟) --- */
@font-face {
  font-family: 'Pixel';
  src: local('Press Start 2P'), local('Courier New');
}

/* --- CSS 自定义属性 (像素冒险主题) --- */
:root {
  --color-bg: #0d1b0e;
  --color-bg-card: #1a2f1c;
  --color-bg-card-hover: #254a28;
  --color-primary: #4aff4a;
  --color-primary-hover: #7fff7f;
  --color-accent: #ffd700;
  --color-text: #d4ffd4;
  --color-text-muted: #6b9e6b;
  --color-danger: #ff4444;
  --color-success: #4aff4a;
  --color-border: #3a6b3a;
  --shadow-card: 4px 4px 0 #0a0f0a;
  --shadow-btn: 3px 3px 0 #0a3d0a;
  --radius: 0px;
  --radius-sm: 0px;
  --transition: 0.1s step-end;
  --font-stack: 'Pixel', 'Courier New', 'PingFang SC', 'Microsoft YaHei', monospace;
}

/* --- 全局重置 --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background: var(--color-bg);
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(74,255,74,0.03) 2px, rgba(74,255,74,0.03) 4px);
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: none;
  image-rendering: pixelated;
}

/* --- 语义化布局 --- */
header {
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 4px solid var(--color-border);
  background: var(--color-bg-card);
  box-shadow: 0 4px 0 #0a0f0a;
}

nav {
  display: flex;
  gap: 16px;
  align-items: center;
}

nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  padding: 6px 12px;
  border: 2px solid transparent;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 1px;
}

nav a:hover,
nav a.active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: rgba(74,255,74,0.08);
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

footer {
  text-align: center;
  padding: 24px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  border-top: 4px solid var(--color-border);
  letter-spacing: 1px;
}

/* --- 标题 --- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.3;
}

h1 {
  font-size: 2.5rem;
  color: var(--color-primary);
  text-shadow: 3px 3px 0 #0a3d0a;
  margin-bottom: 8px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

h2 {
  font-size: 1.6rem;
  color: var(--color-text);
  margin-bottom: 12px;
}

h3 {
  font-size: 1.2rem;
  color: var(--color-text);
}

/* --- 卡片 --- */
.card {
  background: var(--color-bg-card);
  border: 3px solid var(--color-border);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  image-rendering: pixelated;
}

.card:hover {
  background: var(--color-bg-card-hover);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 #0a0f0a;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 24px;
}

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 700;
  font-family: var(--font-stack);
  border: 3px solid #2a7a2a;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  color: #0d1b0e;
  background: var(--color-primary);
  box-shadow: var(--shadow-btn);
  user-select: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  image-rendering: pixelated;
}

.btn:hover {
  background: var(--color-primary-hover);
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 #0a3d0a;
}

.btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 #0a3d0a;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn--secondary {
  background: var(--color-bg-card);
  border: 3px solid var(--color-border);
  color: var(--color-text);
  box-shadow: 3px 3px 0 #0a0f0a;
}

.btn--secondary:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn--accent {
  background: var(--color-accent);
  color: #0d1b0e;
  border-color: #b8960a;
  box-shadow: 3px 3px 0 #6b5a00;
}

.btn--accent:hover {
  background: #ffed4a;
  box-shadow: 5px 5px 0 #6b5a00;
}

.btn--large {
  padding: 16px 40px;
  font-size: 1.2rem;
  border-radius: var(--radius);
}

.btn--small {
  padding: 6px 14px;
  font-size: 0.85rem;
}

/* --- 表单 --- */
input, select, textarea {
  font-family: var(--font-stack);
  font-size: 0.9rem;
  padding: 10px 14px;
  border: 3px solid var(--color-border);
  background: #0a150a;
  color: var(--color-primary);
  transition: var(--transition);
  outline: none;
  box-shadow: inset 2px 2px 0 rgba(0,0,0,0.5);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--color-primary);
  box-shadow: inset 2px 2px 0 rgba(0,0,0,0.5), 0 0 0 3px rgba(74,255,74,0.2);
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

/* --- 工具类 --- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.hidden { display: none !important; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* --- 动画 --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}

@keyframes blink {
  0%, 100% { visibility: visible; }
  50% { visibility: hidden; }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease-out;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

.animate-shake {
  animation: shake 0.5s ease-in-out;
}

/* --- 响应式 --- */
@media (max-width: 768px) {
  html { font-size: 14px; }
  main { padding: 20px 16px; }
  h1 { font-size: 1.8rem; }
  .card-grid { grid-template-columns: 1fr; }
  header { flex-direction: column; gap: 8px; }
  nav { flex-wrap: wrap; justify-content: center; }
  .lobby-panels { flex-direction: column; align-items: center; }
  .lobby-panel { max-width: 100%; }
}

@media (max-width: 480px) {
  h1 { font-size: 1.5rem; }
  .btn--large { padding: 12px 28px; font-size: 1rem; }
}

/* --- 联机大厅 --- */
.lobby-panels {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  max-width: 700px;
}

.lobby-panel {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  flex: 1;
  min-width: 260px;
  max-width: 340px;
}

.lobby-panel h3 {
  margin-bottom: 16px;
  font-size: 1.1rem;
}

.lobby-panel .icon-big {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.lobby-panel input {
  width: 100%;
  margin-bottom: 12px;
  text-align: center;
  font-size: 1.1rem;
  letter-spacing: 2px;
}

.lobby-panel .btn {
  width: 100%;
  margin-top: 8px;
}

.room-info {
  margin-top: 16px;
  padding: 12px;
  background: rgba(245,197,24,0.1);
  border: 1px solid rgba(245,197,24,0.3);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-accent);
}

.room-info .room-code {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 4px;
  font-family: monospace;
}

.players-waiting {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.players-waiting .player-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin: 0 4px;
  animation: pulse 1.5s infinite;
}

.player-dot.p1 { background: #e94560; }
.player-dot.p2 { background: #3498db; }
.player-dot.p3 { background: #2ecc71; }
.player-dot.p4 { background: #f5c518; }

.error-msg {
  color: #e94560;
  font-size: 0.8rem;
  margin-top: 8px;
  min-height: 20px;
}

.map-select-mini {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 12px;
}

.map-select-mini button {
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.75rem;
  font-family: var(--font-stack);
  transition: var(--transition);
}

.map-select-mini button:hover,
.map-select-mini button.sel {
  border-color: var(--color-primary);
  color: var(--color-text);
  background: rgba(233,69,96,0.15);
}