/* GamingDiver — Ocean-themed gaming data analyzer */
:root {
  --bg-deep: #0a1628;
  --bg-mid: #0f2034;
  --bg-card: #132742;
  --bg-card-hover: #1a3358;
  --accent: #00e5ff;
  --accent2: #00b0ff;
  --accent-dim: #0088aa;
  --text: #e0e8f0;
  --text-dim: #8899aa;
  --text-bright: #ffffff;
  --green: #4caf50;
  --red: #ef5350;
  --orange: #ff9800;
  --border: #1e3a5f;
  --radius: 8px;
  --shadow: 0 4px 20px rgba(0,0,0,0.3);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-deep);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* Nav */
.topnav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 24px;
  background: rgba(10,22,40,0.95);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(10px);
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--accent); font-weight: 700; font-size: 1.2em; }
.logo-img { height: 36px; width: 36px; }
.nav-links { display: flex; gap: 20px; }
.nav-links a { color: var(--text-dim); text-decoration: none; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }

/* Landing */
.landing { min-height: calc(100vh - 60px); display: flex; align-items: center; justify-content: center; padding: 40px 20px; position: relative; overflow: hidden; }
.landing.hidden, .dashboard.hidden { display: none !important; }
.hero { max-width: 700px; text-align: center; position: relative; z-index: 1; }
.hero h1 { font-size: 2.8em; margin-bottom: 16px; color: var(--text-bright); line-height: 1.2; }
.accent { color: var(--accent); }
.subtitle { font-size: 1.15em; color: var(--text-dim); margin-bottom: 40px; }

/* Bubbles animation */
.bubbles { position: absolute; width: 100%; height: 100%; top: 0; left: 0; pointer-events: none; }
.bubbles span {
  position: absolute; bottom: -50px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(0,229,255,0.08), transparent);
  border: 1px solid rgba(0,229,255,0.1);
  animation: rise linear infinite;
}
.bubbles span:nth-child(1) { width: 40px; height: 40px; left: 10%; animation-duration: 8s; animation-delay: 0s; }
.bubbles span:nth-child(2) { width: 25px; height: 25px; left: 30%; animation-duration: 10s; animation-delay: 2s; }
.bubbles span:nth-child(3) { width: 55px; height: 55px; left: 55%; animation-duration: 12s; animation-delay: 4s; }
.bubbles span:nth-child(4) { width: 30px; height: 30px; left: 75%; animation-duration: 9s; animation-delay: 1s; }
.bubbles span:nth-child(5) { width: 20px; height: 20px; left: 90%; animation-duration: 11s; animation-delay: 3s; }
@keyframes rise {
  0% { transform: translateY(0) scale(1); opacity: 0.6; }
  100% { transform: translateY(-110vh) scale(0.3); opacity: 0; }
}

/* Upload */
.upload-zone {
  border: 2px dashed var(--accent-dim);
  border-radius: var(--radius);
  padding: 60px 40px;
  cursor: pointer;
  transition: all 0.3s;
  background: rgba(0,229,255,0.03);
  margin-bottom: 20px;
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--accent);
  background: rgba(0,229,255,0.08);
  box-shadow: 0 0 30px rgba(0,229,255,0.1);
}
.upload-icon { font-size: 3em; margin-bottom: 12px; }
.upload-text { font-size: 1.2em; color: var(--text-bright); margin-bottom: 4px; }
.upload-hint { color: var(--text-dim); font-size: 0.9em; }

.upload-progress { margin: 20px 0; }
.progress-bar { height: 6px; background: var(--bg-card); border-radius: 3px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent2)); width: 0; transition: width 0.3s; border-radius: 3px; }
.progress-text { color: var(--text-dim); margin-top: 8px; font-size: 0.9em; }

/* Example link */
.example-link { color: var(--text-dim); font-size: 0.95em; margin-bottom: 24px; }
.example-link a { color: var(--accent); text-decoration: none; font-weight: 500; }
.example-link a:hover { text-decoration: underline; }

/* Supported games */
.supported-games { margin-top: 40px; }
.supported-games h3 { color: var(--text-dim); font-size: 0.85em; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px; }
.game-cards { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.game-card {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--radius);
  background: var(--bg-card); border: 1px solid var(--border);
  font-size: 0.95em;
}
.game-card.active { border-color: var(--accent-dim); color: var(--accent); }
.game-card.coming-soon { opacity: 0.4; }
.game-icon { font-size: 1.3em; }

/* Dashboard */
.dashboard { padding: 20px 24px 60px; max-width: 1400px; margin: 0 auto; }
.dash-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; flex-wrap: wrap; gap: 12px; }
.dash-header h2 { font-size: 1.6em; color: var(--text-bright); }
.dash-actions { display: flex; gap: 8px; }

/* Buttons */
.btn {
  padding: 8px 18px; border-radius: var(--radius); border: none; cursor: pointer;
  font-size: 0.9em; font-weight: 600; transition: all 0.2s;
}
.btn-secondary { background: var(--bg-card); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg-card-hover); border-color: var(--accent-dim); }
.btn-danger { background: rgba(239,83,80,0.15); color: var(--red); border: 1px solid rgba(239,83,80,0.3); }
.btn-danger:hover { background: rgba(239,83,80,0.25); }

/* Tabs */
.tabs { display: flex; gap: 4px; margin-bottom: 24px; border-bottom: 1px solid var(--border); padding-bottom: 0; overflow-x: auto; }
.tab {
  padding: 10px 20px; background: none; border: none; color: var(--text-dim);
  cursor: pointer; font-size: 0.95em; font-weight: 500;
  border-bottom: 2px solid transparent; transition: all 0.2s; white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Mode tabs (battle type selector) */
.mode-tabs {
  display: flex; gap: 6px; margin-bottom: 16px; overflow-x: auto; padding-bottom: 4px;
  flex-wrap: wrap;
}
.mode-tab {
  padding: 6px 14px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-dim); cursor: pointer;
  font-size: 0.85em; font-weight: 500; transition: all 0.2s; white-space: nowrap;
}
.mode-tab:hover { border-color: var(--accent-dim); color: var(--text); }
.mode-tab.active { background: rgba(0,229,255,0.1); border-color: var(--accent); color: var(--accent); }
.mode-count { font-size: 0.85em; opacity: 0.7; }

/* Stat cards */
.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; text-align: center;
}
.stat-card .stat-value { font-size: 2em; font-weight: 700; color: var(--text-bright); }
.stat-card .stat-label { color: var(--text-dim); font-size: 0.85em; margin-top: 4px; text-transform: uppercase; letter-spacing: 1px; }
.stat-card .stat-sub { color: var(--accent-dim); font-size: 0.85em; margin-top: 2px; }
.stat-card.good .stat-value { color: var(--green); }
.stat-card.bad .stat-value { color: var(--red); }

/* Charts */
.chart-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.chart-box {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px;
}
.chart-box.wide { grid-column: 1 / -1; }
.chart-box h3 { color: var(--text-dim); font-size: 0.9em; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; }

/* Top 10 Ships */
.top-ships-controls { margin-bottom: 16px; }
.top-filter-row {
  display: flex; flex-direction: column; gap: 8px; margin-top: 10px;
}
.top-filter-inline {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
}
.type-buttons { display: flex; gap: 4px; margin-left: auto; }
.class-buttons { display: flex; gap: 4px; }
.ship-filter-row, .coll-filter-row { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.nation-icons { display: flex; gap: 4px; flex-wrap: wrap; }
.nation-btn {
  width: 34px; height: 34px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg-mid);
  cursor: pointer; font-size: 1.1em; transition: all 0.2s; padding: 0;
}
.nation-btn:hover { border-color: var(--accent-dim); background: var(--bg-card-hover); }
.nation-btn.active { border-color: var(--accent); background: rgba(0,229,255,0.1); box-shadow: 0 0 6px rgba(0,229,255,0.2); }
.tier-buttons { display: flex; gap: 4px; flex-wrap: wrap; }
.tier-btn {
  min-width: 36px; height: 30px; display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg-mid);
  cursor: pointer; font-size: 0.8em; font-weight: 700; color: var(--text-dim);
  transition: all 0.2s; padding: 0 8px;
}
.tier-btn:hover { border-color: var(--accent-dim); color: var(--text); }
.tier-btn.active { border-color: var(--accent); color: var(--accent); background: rgba(0,229,255,0.1); }
.top-ships-toggle { display: flex; gap: 6px; flex-wrap: wrap; }
.toggle-btn {
  padding: 6px 14px; border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--bg-mid); color: var(--text-dim); cursor: pointer;
  font-size: 0.82em; font-weight: 600; transition: all 0.2s;
}
.toggle-btn:hover { border-color: var(--accent-dim); color: var(--text); }
.toggle-btn.active { background: rgba(0,229,255,0.12); border-color: var(--accent); color: var(--accent); }
.top-ships-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 10px;
}
.top-ship-card {
  display: flex; align-items: center; gap: 14px;
  background: var(--bg-mid); border-radius: var(--radius); padding: 12px 14px;
  border-left: 3px solid var(--accent); transition: background 0.2s;
}
.top-ship-card:hover { background: var(--bg-card-hover); }
.top-ship-rank {
  font-size: 1.3em; font-weight: 800; color: var(--accent-dim); min-width: 28px; text-align: center;
}
.top-ship-rank.gold { color: #ffd700; }
.top-ship-rank.silver { color: #c0c0c0; }
.top-ship-rank.bronze { color: #cd7f32; }
.top-ship-info { flex: 1; min-width: 0; }
.top-ship-name { font-weight: 600; color: var(--text-bright); font-size: 0.95em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top-ship-meta { font-size: 0.78em; color: var(--text-dim); margin-top: 2px; }
.top-ship-stat {
  text-align: right; min-width: 60px;
}
.top-ship-stat .ts-val { font-size: 1.2em; font-weight: 700; color: var(--text-bright); }
.top-ship-stat .ts-label { font-size: 0.7em; color: var(--text-dim); text-transform: uppercase; }

/* Records */
.records-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.record-card {
  background: var(--bg-mid); border-radius: var(--radius); padding: 14px;
  border-left: 3px solid var(--accent);
}
.record-card .record-value { font-size: 1.4em; font-weight: 700; color: var(--accent); }
.record-card .record-label { font-size: 0.8em; color: var(--text-dim); }
.record-card .record-ship { font-size: 0.85em; color: var(--text); margin-top: 2px; }

/* Tables */
.filters {
  display: flex; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; align-items: center;
}
.filters select, .filters input[type="number"] {
  padding: 8px 12px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text); font-size: 0.9em;
}
.filters input[type="number"] { width: 70px; }
.min-battles-label { color: var(--text-dim); font-size: 0.9em; display: flex; align-items: center; gap: 6px; }
.table-container { overflow-x: auto; }
.data-table {
  width: 100%; border-collapse: collapse; font-size: 0.9em;
  background: var(--bg-card); border-radius: var(--radius); overflow: hidden;
}
.data-table th {
  background: var(--bg-mid); padding: 10px 14px; text-align: left;
  color: var(--text-dim); font-weight: 600; font-size: 0.85em;
  text-transform: uppercase; letter-spacing: 0.5px;
  cursor: pointer; user-select: none; white-space: nowrap;
  border-bottom: 1px solid var(--border);
}
.data-table th:hover { color: var(--accent); }
.data-table th.num { text-align: right; }
.data-table th.sorted-asc::after { content: ' ▲'; color: var(--accent); }
.data-table th.sorted-desc::after { content: ' ▼'; color: var(--accent); }
.data-table td { padding: 8px 14px; border-bottom: 1px solid rgba(30,58,95,0.4); }
.data-table td.num { text-align: right; font-variant-numeric: tabular-nums; }
.data-table tr:hover td { background: rgba(0,229,255,0.03); }
.data-table .bar-cell { position: relative; }
.data-table .bar-fill {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: rgba(0,229,255,0.06); z-index: 0; pointer-events: none;
}
.data-table .bar-cell span { position: relative; z-index: 1; }
.win-high { color: var(--green); }
.win-mid { color: var(--orange); }
.win-low { color: var(--red); }

/* Heatmap */
.heatmap-container { display: grid; grid-template-columns: auto repeat(7, 1fr); gap: 3px; font-size: 0.75em; }
.heatmap-label { display: flex; align-items: center; justify-content: flex-end; padding-right: 8px; color: var(--text-dim); font-weight: 500; }
.heatmap-header { text-align: center; color: var(--text-dim); font-weight: 600; padding: 4px 4px 8px; }
.heatmap-cell {
  aspect-ratio: 1; border-radius: 4px; display: flex; align-items: center; justify-content: center;
  font-size: 0.8em; color: transparent; transition: all 0.2s; position: relative; cursor: default;
  min-height: 22px;
}
.heatmap-cell:hover {
  color: var(--text-bright); transform: scale(1.15); z-index: 2;
  box-shadow: 0 0 10px rgba(0,229,255,0.4);
}
.heatmap-cell.empty { background: rgba(255,255,255,0.02); }
.heatmap-legend {
  display: flex; align-items: center; gap: 6px; margin-top: 14px; justify-content: center;
  font-size: 0.8em; color: var(--text-dim); grid-column: 1 / -1;
}
.heatmap-legend-label { font-size: 0.85em; }
.heatmap-legend-bar {
  display: flex; height: 12px; border-radius: 3px; overflow: hidden;
}
.heatmap-legend-bar span { width: 20px; }

/* Collection */
.collection-stats { display: flex; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.collection-stat {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px 20px; display: flex; align-items: center; gap: 10px;
}
.collection-stat .cs-num { font-size: 1.6em; font-weight: 700; color: var(--accent); }
.collection-stat .cs-label { color: var(--text-dim); font-size: 0.85em; }
.collection-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px;
}
.ship-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px; transition: all 0.2s;
}
.ship-card:hover { border-color: var(--accent-dim); background: var(--bg-card-hover); }
.ship-card.not-owned { opacity: 0.4; }
.ship-card .sc-name { font-weight: 600; color: var(--text-bright); margin-bottom: 4px; font-size: 0.95em; }
.ship-card .sc-meta { font-size: 0.8em; color: var(--text-dim); }
.ship-card .sc-stats { display: flex; gap: 12px; margin-top: 8px; font-size: 0.85em; }
.ship-card .sc-stat { }
.ship-card .sc-stat-val { font-weight: 600; }
.tier-badge {
  display: inline-block; padding: 1px 6px; border-radius: 3px; font-size: 0.75em;
  font-weight: 700; background: var(--bg-mid); border: 1px solid var(--border); margin-right: 4px;
}

/* Privacy page */
.privacy-page { max-width: 800px; margin: 0 auto; padding: 40px 24px 80px; }
.privacy-page h1 { font-size: 2em; color: var(--text-bright); margin-bottom: 8px; }
.privacy-page .updated { color: var(--text-dim); margin-bottom: 32px; }
.privacy-page section { margin-bottom: 32px; }
.privacy-page h2 { font-size: 1.2em; color: var(--accent); margin-bottom: 12px; }
.privacy-page p { margin-bottom: 12px; }
.privacy-page ul, .privacy-page ol { margin-left: 20px; margin-bottom: 12px; }
.privacy-page li { margin-bottom: 6px; }
.privacy-page a { color: var(--accent); }

/* Footer */
footer {
  text-align: center; padding: 20px; color: var(--text-dim); font-size: 0.85em;
  border-top: 1px solid var(--border);
}
footer a { color: var(--accent-dim); }

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 1.8em; }
  .chart-row { grid-template-columns: 1fr; }
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
  .dash-header { flex-direction: column; align-items: flex-start; }
  .filters { flex-direction: column; }
}

/* Snapshot Trends */
.snapshot-notice {
  background: var(--bg-card); border-radius: 12px; padding: 24px; margin-bottom: 20px;
  border: 1px dashed var(--border);
}
.snapshot-notice h3 { margin: 0 0 8px; color: var(--text-bright); }
.snapshot-notice .hint { color: var(--text-dim); font-size: 0.85em; margin-top: 12px; }
.snapshot-summary { margin-bottom: 20px; }
.snapshot-summary h3 { margin: 0 0 12px; color: var(--text-bright); }
.snapshot-count { color: var(--text-dim); font-size: 0.8em; font-weight: normal; }
.snapshot-latest { background: var(--bg-card); border-radius: 12px; padding: 20px; border: 1px solid var(--border); }
.snapshot-period { color: var(--text-dim); font-size: 0.9em; margin-bottom: 12px; }
.trend-up { color: #4caf50; font-size: 0.85em; }
.trend-down { color: #ef5350; font-size: 0.85em; }
.trend-flat { color: var(--text-dim); font-size: 0.85em; }

/* Ad container */
.ad-container { max-width: 728px; margin: 20px auto; text-align: center; min-height: 0; }
.ad-container:empty, .ad-container ins:empty { display: none; }

/* Flag icons sizing */
.nation-btn .fi, .nation-icon .fi { font-size: 1.2em; }
.fi { vertical-align: middle; }
.flag-img { height: 1em; width: auto; vertical-align: middle; border-radius: 2px; }