/* ============================================
   风暴之眼 · 航海预警器 — 共享样式表
   暗色海洋主题 · 霓虹科技感 · 警报动效
   ============================================ */

/* --- CSS 自定义属性 --- */
:root {
  --color-bg-start: #0a0e27;
  --color-bg-end: #141852;
  --color-card-bg: rgba(16, 24, 60, 0.85);
  --color-card-border: rgba(0, 180, 255, 0.25);
  --color-primary: #00b4ff;
  --color-primary-glow: rgba(0, 180, 255, 0.4);
  --color-accent: #00f5d4;
  --color-warning: #ff6b35;
  --color-danger: #ff2d55;
  --color-storm: #9b59b6;
  --color-storm-glow: rgba(155, 89, 182, 0.5);
  --color-text: #e0e8ff;
  --color-text-dim: #8899cc;
  --color-text-bright: #ffffff;
  --color-police: #0066ff;
  --color-police-glow: rgba(0, 102, 255, 0.4);
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  --radius: 12px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background: linear-gradient(135deg, var(--color-bg-start), var(--color-bg-end));
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
  padding: 0 16px;
  overflow-x: hidden;
}

/* --- 导航栏 --- */
header {
  padding: 20px 0 10px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: center;
  align-items: center;
  padding: 12px 20px;
  background: rgba(10, 14, 39, 0.7);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  max-width: 800px;
  margin: 0 auto;
}

nav a {
  color: var(--color-text-dim);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 6px 14px;
  border-radius: 6px;
  transition: var(--transition);
  font-weight: 500;
}

nav a:hover,
nav a.active {
  color: var(--color-primary);
  background: rgba(0, 180, 255, 0.1);
  text-shadow: 0 0 8px var(--color-primary-glow);
}

/* --- 标题渐变文字 --- */
h1 {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-align: center;
  margin: 24px 0 8px;
  letter-spacing: 1px;
}

h2 {
  font-size: 1.5rem;
  color: var(--color-text-bright);
  margin: 20px 0 12px;
  text-align: center;
}

h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}

/* --- 卡片容器 --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  max-width: 900px;
  margin: 24px auto;
  padding: 0 8px;
}

.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius);
  padding: 28px 22px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
  cursor: default;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 180, 255, 0.2);
  border-color: var(--color-primary);
}

.card a {
  display: inline-block;
  margin-top: 12px;
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.card a::after {
  content: " →";
}

.card a:hover {
  color: var(--color-accent);
  text-shadow: 0 0 8px var(--color-primary-glow);
}

/* --- 按钮 --- */
.btn {
  display: inline-block;
  padding: 10px 24px;
  border: none;
  border-radius: 8px;
  font-family: var(--font-stack);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #0088cc);
  color: #fff;
  box-shadow: 0 0 16px var(--color-primary-glow);
}

.btn-primary:hover {
  transform: scale(1.04);
  box-shadow: 0 0 28px var(--color-primary-glow);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-success {
  background: linear-gradient(135deg, var(--color-accent), #00b894);
  color: #fff;
  box-shadow: 0 0 16px rgba(0, 245, 212, 0.3);
}

.btn-success:hover {
  transform: scale(1.04);
  box-shadow: 0 0 28px rgba(0, 245, 212, 0.5);
}

.btn-danger {
  background: linear-gradient(135deg, var(--color-danger), #cc0044);
  color: #fff;
}

.btn-danger:hover {
  transform: scale(1.04);
}

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

/* --- 状态标签 --- */
.badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-safe {
  background: rgba(0, 245, 212, 0.2);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.badge-warning {
  background: rgba(255, 107, 53, 0.2);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

.badge-danger {
  background: rgba(255, 45, 85, 0.2);
  color: var(--color-danger);
  border: 1px solid var(--color-danger);
}

/* --- 返回首页链接 --- */
.back-home {
  display: block;
  text-align: center;
  margin: 20px auto;
  color: var(--color-text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.back-home:hover {
  color: var(--color-primary);
}

/* --- Canvas 容器 --- */
.canvas-wrapper {
  max-width: 800px;
  margin: 20px auto;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-card);
}

.canvas-wrapper canvas {
  display: block;
  width: 100%;
  height: auto;
  background: #0a1628;
}

/* --- 数据面板 --- */
.data-panel {
  max-width: 800px;
  margin: 20px auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.data-item {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: 8px;
  padding: 14px 16px;
  text-align: center;
}

.data-item .label {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.data-item .value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text-bright);
  margin-top: 4px;
}

.data-item .value.warning {
  color: var(--color-warning);
}

.data-item .value.danger {
  color: var(--color-danger);
  animation: pulse 1.2s ease-in-out infinite;
}

/* --- 警报条 (屏幕边缘闪烁) --- */
.alert-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 12px 20px;
  background: rgba(255, 45, 85, 0.9);
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  text-align: center;
  z-index: 1000;
  animation: alert-flash 0.6s ease-in-out infinite alternate;
  display: none;
  backdrop-filter: blur(4px);
}

.alert-bar.show {
  display: block;
}

.alert-bar .alert-actions {
  margin-top: 8px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

@keyframes alert-flash {
  0% { background: rgba(255, 45, 85, 0.85); box-shadow: 0 0 20px rgba(255, 45, 85, 0.4); }
  100% { background: rgba(255, 45, 85, 1); box-shadow: 0 0 40px rgba(255, 45, 85, 0.8); }
}

/* --- 风暴区域标签 --- */
.storm-label {
  color: var(--color-storm);
  font-size: 0.85rem;
  font-weight: 600;
  text-shadow: 0 0 8px var(--color-storm-glow);
}

/* --- 航海日志面板 --- */
.log-panel {
  max-width: 800px;
  margin: 20px auto;
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.log-panel h3 {
  margin-bottom: 16px;
  text-align: center;
}

.log-entry {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(0, 180, 255, 0.1);
  gap: 8px;
  flex-wrap: wrap;
}

.log-entry:last-child {
  border-bottom: none;
}

.log-entry .log-time {
  color: var(--color-text-dim);
  font-size: 0.85rem;
}

.log-entry .log-detail {
  flex: 1;
  font-size: 0.95rem;
}

.log-entry .log-storms {
  color: var(--color-warning);
  font-size: 0.85rem;
}

/* --- 动画 --- */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.card, .data-item, .log-entry {
  animation: fadeInUp 0.5s ease both;
}

.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.2s; }
.card:nth-child(4) { animation-delay: 0.3s; }

/* --- 航海风格 · 动态海浪条 --- */
.wave-bar {
  position: relative;
  width: 100%;
  height: 60px;
  max-width: 800px;
  margin: -6px auto 0;
  overflow: hidden;
  opacity: 0.6;
}

.wave {
  position: absolute;
  bottom: 0;
  width: 200%;
  height: 100%;
  background-repeat: repeat-x;
  animation: wave-move linear infinite;
}

.wave-1 {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,60 C200,20 400,100 600,60 C800,20 1000,100 1200,60 L1200,120 L0,120 Z' fill='rgba(0,180,255,0.12)'/%3E%3C/svg%3E") repeat-x;
  background-size: 600px 60px;
  animation-duration: 4s;
  bottom: 0;
}

.wave-2 {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,70 C200,30 400,110 600,70 C800,30 1000,110 1200,70 L1200,120 L0,120 Z' fill='rgba(0,245,212,0.08)'/%3E%3C/svg%3E") repeat-x;
  background-size: 500px 60px;
  animation-duration: 5.5s;
  animation-direction: reverse;
  bottom: 4px;
}

.wave-3 {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,80 C200,40 400,120 600,80 C800,40 1000,120 1200,80 L1200,120 L0,120 Z' fill='rgba(0,180,255,0.06)'/%3E%3C/svg%3E") repeat-x;
  background-size: 400px 60px;
  animation-duration: 7s;
  bottom: 8px;
}

@keyframes wave-move {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* --- 响应式 --- */
@media (max-width: 600px) {
  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.2rem; }
  nav { gap: 4px 10px; padding: 10px 12px; }
  nav a { font-size: 0.85rem; padding: 4px 10px; }
  .card-grid { grid-template-columns: 1fr; gap: 14px; }
  .data-panel { grid-template-columns: 1fr 1fr; }
  .alert-bar { font-size: 0.95rem; padding: 10px 14px; }
  .log-entry { flex-direction: column; align-items: flex-start; }
}

/* --- 海警管理样式 --- */
.patrol-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.patrol-badge.active {
  background: rgba(0, 102, 255, 0.3);
  color: var(--color-police);
  border: 1px solid var(--color-police);
}

.patrol-badge.standby {
  background: rgba(100, 100, 120, 0.3);
  color: #8899cc;
  border: 1px solid #556;
}

.violation-marker {
  color: var(--color-danger);
  font-weight: 700;
  text-shadow: 0 0 8px rgba(255, 45, 85, 0.5);
}

.water-boundary {
  border: 1px dashed rgba(0, 100, 255, 0.4);
}

/* 海警按钮变体 */
.btn-police {
  background: linear-gradient(135deg, var(--color-police), #0044cc);
  color: #fff;
  box-shadow: 0 0 16px var(--color-police-glow);
}

.btn-police:hover {
  transform: scale(1.04);
  box-shadow: 0 0 28px var(--color-police-glow);
}

/* 全景容器 */
.panorama-hint {
  text-align: center;
  color: var(--color-text-dim);
  font-size: 0.85rem;
  margin: 4px 0 16px;
}

/* --- AIS 船舶列表样式 --- */
.ais-entry {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(0, 180, 255, 0.1);
  gap: 8px;
  flex-wrap: wrap;
  transition: background var(--transition);
}

.ais-entry:hover {
  background: rgba(0, 180, 255, 0.05);
}

.ais-entry:last-child {
  border-bottom: none;
}

.ais-ship-name {
  color: var(--color-accent);
  font-weight: 600;
  min-width: 90px;
}

.ais-ship-mmsi {
  color: var(--color-text-dim);
  font-size: 0.8rem;
  min-width: 100px;
}

.ais-ship-speed {
  color: var(--color-text);
  font-size: 0.85rem;
}

.ais-ship-heading {
  color: var(--color-text-dim);
  font-size: 0.8rem;
}

/* --- 夜间模式 --- */
body.night-mode {
  --color-bg-start: #050714;
  --color-bg-end: #0a0e27;
  --color-card-bg: rgba(8, 12, 36, 0.92);
  --color-card-border: rgba(0, 100, 200, 0.15);
  --color-text: #8899bb;
  --color-text-dim: #556688;
  --color-text-bright: #aabbdd;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.7);
}
body.night-mode nav a:hover,
body.night-mode nav a.active {
  color: #0066aa;
  text-shadow: 0 0 4px rgba(0, 100, 200, 0.2);
}
body.night-mode .card {
  border-color: rgba(0, 80, 160, 0.12);
}
body.night-mode h1 {
  background: linear-gradient(135deg, #0066aa, #0088aa);
  -webkit-background-clip: text;
  background-clip: text;
}

/* 夜间灯光闪烁 */
body.night-mode .card .card-header::after {
  content: ' 💡';
  opacity: 0.6;
  animation: lightBlink 2s ease-in-out infinite;
}
@keyframes lightBlink {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}
body.night-mode nav a:hover,
body.night-mode nav a.active {
  color: #00aaff;
  text-shadow: 0 0 12px rgba(0, 170, 255, 0.6);
}
body.night-mode .wave-bar .wave {
  opacity: 0.15;
}

.ais-ship-dist {
  color: var(--color-warning);
  font-size: 0.85rem;
}

/* --- 夜间模式 --- */
body.night-mode {
  --color-bg-start: #050712;
  --color-bg-end: #0a0e1f;
  --color-card-bg: rgba(8, 12, 30, 0.92);
  --color-card-border: rgba(0, 180, 255, 0.12);
  --color-text: #b0c4ff;
  --color-text-dim: #5a6a99;
  --color-text-bright: #d0dcff;
}
body.night-mode nav {
  background: rgba(5, 7, 18, 0.85);
  border-color: rgba(0, 180, 255, 0.1);
}
body.night-mode .card {
  background: rgba(8, 12, 30, 0.95);
  border-color: rgba(0, 180, 255, 0.1);
}
body.night-mode canvas {
  filter: brightness(0.7) contrast(1.1);
}
body.night-mode .data-panel {
  background: rgba(8, 12, 30, 0.9);
  border-color: rgba(0, 180, 255, 0.08);
}