/* ==========================================================================
   1. THEME ENGINE (CSS VARIABLES)
   ========================================================================== */
:root {
    /* Light Theme Defaults */
    --bg-main: #f4f4f9;
    --text-main: #222222;
    --bg-panel: #ffffff;
    --bg-card: #f9f9f9;
    --border-color: #dddddd;
    --header-border: #cccccc;
    --tab-inactive: #e0e0e0;
    --tab-text: #333333;
    --btn-bg: #005a9c;
    --btn-text: #ffffff;
    --accent-color: #d32f2f; 
    --json-bg: #f8f8f8;
    --code-key: #005a9c;
    --code-str: #a11;
    --code-num: #098658;
    --code-bool: #0000ff;
    --code-null: #e51400;
}

[data-theme="dark"] {
    /* Dark Theme Overrides */
    --bg-main: #1e1e1e;
    --text-main: #f0f0f0;
    --bg-panel: #222222;
    --bg-card: #2a2a2a;
    --border-color: #444444;
    --header-border: #333333;
    --tab-inactive: #333333;
    --tab-text: #ffffff;
    --btn-bg: #005a9c;
    --btn-text: #ffffff;
    --accent-color: #ffcc00;
    --json-bg: #111111;
    --code-key: #9cdcfe;
    --code-str: #ce9178;
    --code-num: #b5cea8;
    --code-bool: #569cd6;
    --code-null: #f44747;
}

/* ==========================================================================
   2. GLOBAL STRUCTURAL STYLES
   ========================================================================== */
body { 
    font-family: 'Segoe UI', Tahoma, sans-serif; 
    margin: 0; padding: 20px; 
    background-color: var(--bg-main); 
    color: var(--text-main); 
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

.header-container { position: relative; text-align: center; border-bottom: 2px solid var(--header-border); margin-bottom: 15px; }
h1 { margin-top: 0; padding-bottom: 15px; margin-bottom: 0; }
.version-tag { position: absolute; right: 10px; bottom: 10px; font-size: 12px; color: #888; font-family: monospace; background: var(--header-border); padding: 2px 6px; border-radius: 4px;}

#status { 
    text-align: center; margin-bottom: 20px; padding: 15px; 
    background-color: var(--bg-card); border-radius: 6px; color: #888; 
    font-weight: bold; border: 1px solid var(--border-color);
}

/* ==========================================================================
   3. UI CONTROLS & NAVIGATION TABS
   ========================================================================== */
.control-panel {
    background-color: var(--bg-panel); border: 1px solid var(--border-color); border-radius: 6px;
    padding: 8px 16px; margin-bottom: 15px; display: flex; align-items: center;
    justify-content: space-between; flex-wrap: wrap; gap: 15px;
}
.control-info { font-size: 0.9em; color: var(--text-main); }
.control-info:empty { display: none; }
.control-info strong { color: #00a000; }
[data-theme="dark"] .control-info strong { color: #00ff00; }

.btn-group { display: flex; gap: 10px; flex-wrap: wrap; }
.action-btn {
    background-color: var(--btn-bg); color: var(--btn-text); border: none; padding: 10px 18px;
    font-size: 14px; font-weight: bold; border-radius: 4px; cursor: pointer;
    transition: opacity 0.2s, transform 0.1s; display: flex; align-items: center; gap: 8px;
}
.action-btn:hover { opacity: 0.9; }
.action-btn:active { transform: scale(0.98); }
.clear-btn { background-color: var(--border-color); color: var(--text-main); border: 1px solid var(--header-border); }

.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 15px;}
.setting-item { display: flex; flex-direction: column; gap: 5px; }
.setting-item label { font-weight: bold; }
.setting-item select, .setting-item input[type="number"] { padding: 8px; border-radius: 4px; border: 1px solid var(--border-color); background: var(--bg-main); color: var(--text-main); font-size: 16px; }
.setting-item input[type="number"]:disabled { opacity: 0.5; cursor: not-allowed; }
.toggle-switch { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.toggle-switch input { width: 20px; height: 20px; cursor: pointer; }

.tab-container {
    display: flex; justify-content: center; flex-wrap: wrap; gap: 5px;
    position: sticky; top: 0; z-index: 100;
    margin-bottom: 20px; padding: 10px 0;
    background-color: var(--bg-main);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}
.tab-button {
    background-color: var(--tab-inactive); color: var(--tab-text); border: none; outline: none;
    cursor: pointer; padding: 14px 24px; transition: 0.3s;
    font-size: 16px; font-weight: bold; border-radius: 8px 8px 0 0;
}
.tab-button:hover { filter: brightness(1.1); }
.tab-button.active { background-color: var(--btn-bg); color: var(--btn-text); }
.tab-content { display: none; padding: 20px; background-color: var(--bg-panel); border-radius: 8px; border: 1px solid var(--border-color); }

/* ==========================================================================
   4. DATA GRIDS & CAMERA CARDS
   ========================================================================== */
.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 20px; }
#trip-grid, #oc-grid, #corridor-container .dashboard-grid { grid-template-columns: repeat(auto-fill, minmax(640px, 1fr)); }

.camera-card { 
    background-color: var(--bg-card); border-radius: 8px; overflow: hidden; 
    border: 1px solid var(--border-color); display: flex; flex-direction: column; min-height: 250px; 
}
.camera-title { 
    padding: 10px 15px; background-color: var(--header-border); font-size: 0.9em; 
    font-weight: bold; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    display: flex; justify-content: space-between; align-items: center;
}
.distance-badge {
    background-color: var(--btn-bg); color: var(--btn-text); font-size: 0.8em; padding: 2px 6px;
    border-radius: 4px; font-family: monospace; flex-shrink: 0; margin-left: 10px;
}

.video-container { position: relative; width: 100%; padding-top: calc(56.25% + 45px); background-color: #000; overflow: hidden; }
iframe, video { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; transform-origin: top left; }
video { object-fit: contain; background-color: #000; }
.route-header { color: var(--accent-color); border-bottom: 1px solid var(--border-color); padding-bottom: 5px; margin-top: 30px;}

/* ==========================================================================
   5. MAP LAYOUT & LEAFLET OVERRIDES
   ========================================================================== */
#map-layout { display: flex; gap: 20px; height: 650px; }
#map-view { flex: 2; border-radius: 8px; overflow: hidden; border: 2px solid var(--border-color); z-index: 1;}

.leaflet-control-layers { background-color: var(--bg-panel) !important; color: var(--text-main) !important; border: 1px solid var(--border-color) !important; }
.leaflet-control-layers-expanded { padding: 10px !important; max-height: 500px; overflow-y: auto; }

#map-video-panel { 
    flex: 1; background-color: var(--bg-card); border-radius: 8px; padding: 15px; 
    display: flex; flex-direction: column; border: 2px solid var(--border-color); min-height: 0;
}
#selected-map-title { font-weight: bold; margin-bottom: 15px; color: var(--accent-color); }
#selected-video-container { width: 100%; position: relative; padding-top: calc(56.25% + 45px); background-color: #000; margin-bottom: 15px; flex-shrink: 0; }

.marker-cluster-small div, .marker-cluster-medium div, .marker-cluster-large div { background-color: rgba(0, 90, 156, 0.6) !important; color: #fff !important; font-weight: bold !important; }
.marker-cluster-small, .marker-cluster-medium, .marker-cluster-large { background-color: rgba(0, 90, 156, 0.3) !important; }

.oc-cam-marker {
    font-size: 16px; text-align: center; line-height: 24px;
    background: rgba(0, 188, 212, 0.9); border-radius: 50%;
    box-shadow: 0 0 0 2px #00646f;
}

/* ==========================================================================
   6. CONTENT PANELS & RAW DATA VIEWER
   ========================================================================== */
.content-panel { line-height: 1.8; }
.content-panel h2 { color: var(--accent-color); margin-top: 0; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }
.content-panel h3 { color: var(--btn-bg); margin-bottom: 5px; margin-top: 25px; border-bottom: 1px dashed var(--border-color); padding-bottom: 5px;}
.content-panel a { color: var(--btn-bg); text-decoration: none; font-weight: bold;}
.content-panel a:hover { text-decoration: underline; }
[data-theme="dark"] .content-panel a { color: #9cdcfe; }
.help-list { padding-left: 20px; }
.help-list li { margin-bottom: 10px; }

.search-bar { width: 100%; padding: 12px; margin-bottom: 15px; background: var(--json-bg); border: 1px solid var(--border-color); color: var(--text-main); border-radius: 4px; font-size: 16px; box-sizing: border-box; }
.search-bar:focus { outline: none; border-color: var(--btn-bg); }

#json-viewer {
    background-color: var(--json-bg); padding: 15px; border-radius: 6px; overflow-x: auto; max-height: 600px; overflow-y: auto;
    font-family: 'Courier New', Courier, monospace; border: 1px solid var(--border-color); font-size: 0.95em;
}
#json-viewer ul { list-style-type: none; padding-left: 20px; margin: 0; border-left: 1px dashed var(--border-color); }
#json-viewer li { margin: 2px 0; }
summary { cursor: pointer; font-weight: bold; outline: none; color: #888;}

.json-key { color: var(--code-key); font-weight: bold; } 
.json-string { color: var(--code-str); } 
.json-number { color: var(--code-num); } 
.json-boolean { color: var(--code-bool); } 
.json-null { color: var(--code-null); }

/* ==========================================================================
   7. MOBILE RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 800px) {
    .tab-button { flex: 1 1 45%; border-radius: 6px; font-size: 14px; padding: 10px; }
    #map-layout { flex-direction: column; height: auto; }
    #map-view { min-height: 400px; }
    #map-video-panel { flex: none; height: auto; }
    #trip-grid, #oc-grid, #corridor-container .dashboard-grid { grid-template-columns: repeat(auto-fill, minmax(100%, 1fr)); }
    .settings-grid { grid-template-columns: 1fr; }
    .control-panel { flex-direction: column; text-align: center; }
    .btn-group, .action-btn { width: 100%; justify-content: center; }
}