/* ============================================================
   航行警告 — 一套样式适配 Web + Mobile
   ============================================================ */

:root {
  --c-bg:        #f2f4f7;
  --c-surface:   #ffffff;
  --c-primary:   #1a5fdc;
  --c-primary-h: #1447b0;
  --c-primary-l: #e8f0fe;
  --c-text:      #1c2433;
  --c-text-2:    #5a6475;
  --c-text-3:    #949faf;
  --c-border:    #e3e7ed;
  --c-accent:    #f59e0b;
  --c-danger:    #ef4444;
  --c-success:   #10b981;
  --radius:      10px;
  --radius-sm:   6px;
  --shadow-sm:   0 1px 2px rgba(0,0,0,.04);
  --shadow:      0 1px 4px rgba(0,0,0,.06), 0 2px 12px rgba(0,0,0,.03);
  --shadow-lg:   0 4px 16px rgba(0,0,0,.08), 0 6px 28px rgba(0,0,0,.04);
  --font:        -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --max-w:       800px;
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

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

img { max-width: 100%; height: auto; }

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--c-border);
}

.topbar-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  height: 52px;
  padding: 0 16px;
  gap: 12px;
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-text);
  flex-shrink: 0;
}

/* ============================================================
   SEARCH BOX
   ============================================================ */
.search-box {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  max-width: 380px;
  margin: 0 8px;
}

.search-icon {
  position: absolute;
  left: 10px;
  color: var(--c-text-3);
  pointer-events: none;
  flex-shrink: 0;
}

.search-input {
  width: 100%;
  height: 34px;
  padding: 0 30px 0 32px;
  border: 1px solid var(--c-border);
  border-radius: 18px;
  background: #f5f6f8;
  font-size: .82rem;
  font-family: var(--font);
  color: var(--c-text);
  outline: none;
  transition: border-color .15s, background .15s;
}

.search-input:focus {
  border-color: var(--c-primary);
  background: var(--c-surface);
}

.search-input::placeholder {
  color: var(--c-text-3);
}

.search-clear {
  position: absolute;
  right: 4px;
  width: 26px;
  height: 26px;
  border: none;
  background: transparent;
  color: var(--c-text-3);
  font-size: 1.1rem;
  cursor: pointer;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: background .15s, color .15s;
}

.search-clear:hover {
  background: #e5e7eb;
  color: var(--c-text);
}

@media (max-width: 640px) {
  .search-box { max-width: none; margin: 0 4px; }
  .search-input { font-size: .78rem; height: 30px; }
}

.brand-icon {
  color: var(--c-primary);
}

.topbar-title {
  font-size: .95rem;
  font-weight: 600;
  color: var(--c-text-2);
  flex:1;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar-spacer { width: 60px; }

/* 返回按钮 */
.btn-back {
  display: flex;
  align-items: center;
  gap: 2px;
  font-size: .88rem;
  font-weight: 500;
  color: var(--c-primary);
  padding: 4px 8px 4px 0;
  border-radius: var(--radius-sm);
  transition: background .15s;
  white-space: nowrap;
}
.btn-back:hover { background: var(--c-primary-l); }

/* 更新按钮 */
.btn-update {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--c-surface);
  color: var(--c-primary);
  border: 1.5px solid var(--c-border);
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  font-size: .82rem;
  font-weight: 500;
  font-family: var(--font);
  transition: all .18s;
}
.btn-update:hover {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}
.btn-update:active { transform: scale(.96); }
.btn-update:disabled {
  opacity: .55;
  cursor: not-allowed;
}
.btn-update .icon-sync { transition: transform .4s; }
.btn-update.loading .icon-sync { animation: spin .9s linear infinite; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
  max-width: var(--max-w);
  margin: 12px auto 0;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: .8rem;
  color: var(--c-text-2);
}

.stat-value {
  font-weight: 700;
  color: var(--c-text);
  font-size: .9rem;
}

.stat-label {
  color: var(--c-text-3);
}

.stat-icon {
  flex-shrink: 0;
  color: var(--c-text-3);
}

.stat-divider {
  width: 1px;
  height: 14px;
  background: var(--c-border);
}

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  max-width: var(--max-w);
  margin: 8px auto 0;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--c-primary-l);
  border-radius: var(--radius-sm);
  font-size: .82rem;
  color: var(--c-primary);
  font-weight: 500;
}

.toast-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--c-primary);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin .7s linear infinite;
  flex-shrink: 0;
}

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main-content {
  max-width: var(--max-w);
  margin: 12px auto 24px;
  padding: 0 12px;
}

/* ============================================================
   CARD LIST
   ============================================================ */
.card-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.warning-card {
  display: flex;
  gap: 14px;
  background: var(--c-surface);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: box-shadow .2s, transform .18s, border-color .2s;
  border: 1px solid var(--c-border);
  position: relative;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

.warning-card:active {
  transform: scale(.988);
}

/* 桌面 hover */
@media (hover: hover) {
  .warning-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: #ccd5e4;
    transform: translateY(-1px);
  }
}

/* 左侧彩色条（hover 时显示） */
.warning-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--c-primary);
  opacity: 0;
  transition: opacity .25s;
}
.warning-card:hover::before { opacity: 1; }

.card-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--c-primary-l);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  margin-top: 2px;
}

.card-body {
  flex: 1;
  min-width: 0;
}

.card-title {
  font-size: .95rem;
  font-weight: 600;
  color: var(--c-text);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

.card-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .78rem;
  color: var(--c-text-3);
  flex-wrap: wrap;
}

.card-date {
  font-weight: 500;
  color: var(--c-text-2);
}

.card-source {
  background: #f8f9fc;
  padding: 1px 8px;
  border-radius: 10px;
  font-size: .74rem;
  color: var(--c-text-3);
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-arrow {
  flex-shrink: 0;
  color: var(--c-text-3);
  align-self: center;
  opacity: .4;
  transition: opacity .2s;
}
.warning-card:hover .card-arrow { opacity: .8; }

/* ============================================================
   DETAIL PAGE
   ============================================================ */
.detail-card {
  background: var(--c-surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--c-border);
}

.detail-title {
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--c-text);
  line-height: 1.5;
  margin-bottom: 16px;
}

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  font-size: .8rem;
  color: var(--c-text-2);
  padding-bottom: 18px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--c-border);
}

.meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #f8f9fc;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: .77rem;
  color: var(--c-text-2);
}

.meta-tag svg { opacity: .5; }

.meta-link {
  color: var(--c-primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px 10px;
  background: var(--c-primary-l);
  border-radius: 12px;
  font-size: .77rem;
  transition: background .15s;
}
.meta-link:hover { background: #cfdffb; }

.detail-body {
  font-size: .93rem;
  line-height: 2;
  color: var(--c-text);
  word-break: break-word;
}

.detail-body p {
  margin-bottom: 1em;
}

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
  max-width: var(--max-w);
  margin: 0 auto 24px;
  padding: 0 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
}

.pagination button {
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  color: var(--c-text-2);
  font-size: .82rem;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font);
  transition: all .15s;
  -webkit-tap-highlight-color: transparent;
}

.pagination button:hover:not(:disabled):not(.active) {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.pagination button.active {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
  font-weight: 700;
}

.pagination button:disabled {
  opacity: .35;
  cursor: not-allowed;
}

.pagination .page-ellipsis {
  padding: 0 4px;
  font-size: .82rem;
  color: var(--c-text-3);
}

.pagination .page-total {
  margin-left: 8px;
  font-size: .78rem;
  color: var(--c-text-3);
}

/* ============================================================
   EMPTY / LOADING / SKELETON
   ============================================================ */
.empty-state {
  text-align: center;
  padding: 64px 20px;
}

.empty-icon { margin-bottom: 16px; }

.empty-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-text-2);
  margin-bottom: 6px;
}

.empty-hint {
  font-size: .82rem;
  color: var(--c-text-3);
}

.loading-state {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skeleton {
  background: linear-gradient(90deg, #e8ecf2 25%, #f2f4f7 50%, #e8ecf2 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================================
   CONTROL BAR + SORT TABS
   ============================================================ */
.control-bar {
  max-width: var(--max-w);
  margin: 10px auto 0;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.control-left {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .8rem;
  color: var(--c-text-2);
}

.ctrl-divider {
  width: 1px;
  height: 14px;
  background: var(--c-border);
}

.sort-tabs {
  display: flex;
  background: var(--c-surface);
  border-radius: 20px;
  border: 1px solid var(--c-border);
  overflow: hidden;
}

.control-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.source-filter {
  padding: 5px 12px;
  font-size: .77rem;
  font-weight: 500;
  border: 1px solid var(--c-border);
  border-radius: 20px;
  background: var(--c-surface);
  color: var(--c-text-2);
  cursor: pointer;
  font-family: var(--font);
  max-width: 160px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23949faf' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  padding-right: 28px;
}

.source-filter:focus {
  outline: none;
  border-color: var(--c-primary);
}

.sort-tab {
  padding: 5px 14px;
  font-size: .77rem;
  font-weight: 500;
  border: none;
  background: transparent;
  color: var(--c-text-3);
  cursor: pointer;
  font-family: var(--font);
  transition: all .15s;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}

.sort-tab:hover { color: var(--c-primary); }

.sort-tab.active {
  background: var(--c-primary);
  color: #fff;
  border-radius: 20px;
}

/* ============================================================
   CARD ACTIONS + MAP BADGE
   ============================================================ */
.card-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.map-badge {
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #dbeafe;
  color: #2563eb;
  cursor: pointer;
  transition: background .15s;
  flex-shrink: 0;
}

.map-badge:hover { background: #bfdbfe; }

/* ============================================================
   MAP CONTAINER (Detail Page)
   ============================================================ */
.map-section { padding: 0; overflow: hidden; }

.map-section .coord-section-title {
  padding: 14px 16px 10px;
  margin-bottom: 0;
}

.map-container {
  width: 100%;
  height: 380px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

@media (max-width: 640px) {
  .map-container { height: 260px; }
}

/* ============================================================
   EFFECTIVE TIME TAGS
   ============================================================ */
.eff-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: 11px;
  font-size: .74rem;
  font-weight: 600;
  margin-top: 6px;
  white-space: nowrap;
}

/* 今天生效 — 最显眼：红色 */
.eff-today {
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fecaca;
}

/* 即将生效 — 次显眼：橙色 */
.eff-future {
  background: #fff7ed;
  color: #ea580c;
  border: 1px solid #fed7aa;
}

/* 已过期 — 最不显眼：灰色 */
.eff-past {
  background: #f9fafb;
  color: #9ca3af;
  border: 1px solid #e5e7eb;
}

/* ============================================================
   COORDINATES / CONVEX HULL (Detail Page)
   ============================================================ */
.coord-section {
  background: #f8f9fc;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-bottom: 16px;
  border: 1px solid var(--c-border);
}

.coord-section-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--c-text-2);
  margin-bottom: 10px;
}

.coord-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.coord-chip {
  display: inline-block;
  padding: 2px 10px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  font-size: .76rem;
  font-family: "SF Mono", "Menlo", "Consolas", monospace;
  color: var(--c-text);
  white-space: nowrap;
}

.chip-hull {
  background: var(--c-primary-l);
  border-color: #bed5f7;
  color: var(--c-primary);
  font-weight: 600;
}

.hull-area {
  margin-top: 10px;
  font-size: .78rem;
  color: var(--c-text-3);
}

/* ============================================================
   RESPONSIVE — Mobile
   ============================================================ */
@media (max-width: 640px) {
  .topbar-inner {
    height: 48px;
    padding: 0 12px;
  }

  .topbar-brand { font-size: 1rem; }

  .stats-bar {
    margin-top: 8px;
    padding: 8px 12px;
  }

  .main-content {
    margin-top: 8px;
    padding: 0 8px;
  }

  .card-list { gap: 6px; }

  .warning-card {
    padding: 14px;
    gap: 10px;
    border-radius: var(--radius-sm);
  }

  .card-icon {
    width: 32px;
    height: 32px;
  }

  .card-title {
    font-size: .88rem;
  }

  .card-footer {
    gap: 8px;
    font-size: .75rem;
  }

  .detail-card { padding: 18px 16px; }

  .detail-title { font-size: 1.1rem; }

  .detail-body { font-size: .9rem; }

  .pagination {
    gap: 2px;
    padding: 0 4px;
  }

  .pagination button {
    min-width: 32px;
    height: 32px;
    font-size: .78rem;
    padding: 0 8px;
  }

  .btn-text { display: none; }
  .btn-update { padding: 6px 10px; }

  .control-bar {
    padding: 6px 10px;
    gap: 8px;
    flex-direction: column;
    align-items: stretch;
  }

  .control-left { font-size: .75rem; }

  .control-right {
    gap: 6px;
    justify-content: space-between;
  }

  .source-filter {
    font-size: .72rem;
    max-width: 120px;
    padding: 4px 24px 4px 10px;
  }

  .sort-tab {
    padding: 4px 10px;
    font-size: .72rem;
  }

  .coord-section { padding: 10px 12px; }
  .coord-chip { font-size: .72rem; padding: 2px 8px; }

  .eff-tag { font-size: .7rem; padding: 1px 8px; }
}

/* ============================================================
   RESPONSIVE — Desktop wide
   ============================================================ */
@media (min-width: 1024px) {
  .warning-card { padding: 18px 22px; }
  .detail-card { padding: 32px; }
  .detail-title { font-size: 1.35rem; }
  .detail-body { font-size: .95rem; }
}