* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background: linear-gradient(135deg, #cc0000 0%, #000000 100%);
            min-height: 100vh;
            padding: 20px;
            color: #333;
        }

        .container {
            max-width: 1000px;
            margin: 0 auto;
        }

        h1 {
            text-align: center;
            color: white;
            margin-bottom: 10px;
            font-size: 2.5em;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }

        .subtitle {
            text-align: center;
            color: rgba(255,255,255,0.9);
            margin-bottom: 30px;
            font-size: 1.1em;
        }

        .controls {
            background: white;
            padding: 20px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            margin-bottom: 30px;
        }

        .control-row {
            display: flex;
            gap: 20px;
            align-items: center;
            flex-wrap: wrap;
            margin-bottom: 15px;
        }

        .control-row:last-child {
            margin-bottom: 0;
        }

        label {
            font-weight: 600;
            color: #555;
        }

        select {
            flex: 1;
            min-width: 200px;
            padding: 10px 15px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 16px;
            background: white;
            cursor: pointer;
            transition: border-color 0.3s;
        }

        select:hover {
            border-color: #cc0000;
        }

        select:focus {
            outline: none;
            border-color: #cc0000;
        }

        .time-controls {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .time-input {
            padding: 8px 12px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 16px;
            width: 80px;
        }

        .time-input:focus {
            outline: none;
            border-color: #cc0000;
        }

        .btn {
            padding: 8px 16px;
            border: none;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }

        .btn-primary {
            background: #cc0000;
            color: white;
        }

        .btn-primary:hover {
            background: #a00000;
            transform: translateY(-1px);
        }

        .btn-secondary {
            background: #e0e0e0;
            color: #555;
        }

        .btn-secondary:hover {
            background: #d0d0d0;
        }

        .current-time {
            background: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            margin-bottom: 30px;
            text-align: center;
        }

        .current-time h2 {
            color: #cc0000;
            margin-bottom: 10px;
        }

        .time-display {
            font-size: 2em;
            font-weight: bold;
            color: #333;
            margin-bottom: 5px;
        }

        .date-display {
            color: #777;
            font-size: 1.1em;
        }

        .timeline {
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            margin-bottom: 30px;
        }

        .timeline-hours {
            display: flex;
            margin-bottom: 30px;
            position: relative;
            height: 40px;
            background: #f5f5f5;
            border-radius: 8px;
            cursor: pointer;
            user-select: none;
        }

        .hour-label {
            flex: 1;
            text-align: center;
            font-size: 12px;
            color: #666;
            padding: 10px 0;
            border-right: 1px solid #ddd;
        }

        .hour-label:last-child {
            border-right: none;
        }

        .sessions {
            position: relative;
        }

        .session-bar {
            position: relative;
            height: 60px;
            margin-bottom: 20px;
            background: #f9f9f9;
            border-radius: 8px;
            overflow: visible;
        }

        .session-info {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 15px;
            height: 100%;
            position: relative;
            z-index: 1;
        }

        .session-name {
            font-weight: bold;
            font-size: 1.1em;
        }

        .session-time {
            font-size: 0.9em;
            color: #666;
        }

        .session-active-bar {
            position: absolute;
            top: 0;
            height: 100%;
            opacity: 0.7;
            transition: left 0.6s ease-out, width 0.6s ease-out;
            border-radius: 8px;
        }

        .sydney .session-active-bar {
            background: linear-gradient(90deg, #4facfe 0%, #00f2fe 100%);
        }

        .tokyo .session-active-bar {
            background: linear-gradient(90deg, #fa709a 0%, #fee140 100%);
        }

        .london .session-active-bar {
            background: linear-gradient(90deg, #30cfd0 0%, #330867 100%);
        }

        .newyork .session-active-bar {
            background: linear-gradient(90deg, #a8edea 0%, #fed6e3 100%);
        }

        .status-badge {
            display: inline-block;
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 0.85em;
            font-weight: 600;
            margin-left: 10px;
        }

        .status-open {
            background: #4caf50;
            color: white;
        }

        .status-closed {
            background: #e0e0e0;
            color: #666;
        }

        .volume-indicator {
            background: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }

        .volume-chart {
            position: relative;
            height: 250px;
            margin-top: 20px;
            padding: 0 10px;
        }

        .volume-chart-canvas {
            position: absolute;
            top: 0;
            left: 10px;
            right: 10px;
            bottom: 0;
        }

        canvas {
            width: 100%;
            height: 100%;
        }

        .volume-chart-hover-info {
            position: absolute;
            background: rgba(204, 0, 0, 0.95);
            color: white;
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 12px;
            pointer-events: none;
            z-index: 20;
            white-space: nowrap;
            transition: all 0.3s ease;
            transform: translate(-50%, -100%);
            margin-top: -10px;
        }

        .volume-chart-hover-info::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 0;
            border-left: 6px solid transparent;
            border-right: 6px solid transparent;
            border-top: 6px solid rgba(204, 0, 0, 0.95);
        }

        .volume-current-indicator {
            position: absolute;
            width: 2px;
            height: 100%;
            background: #f44336;
            top: 0;
            z-index: 10;
            transition: left 0.3s;
        }

        .volume-current-indicator::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: -3px;
            width: 8px;
            height: 8px;
            background: #f44336;
            border-radius: 50%;
            border: 2px solid white;
        }

        .current-time-indicator {
            position: absolute;
            width: 3px;
            height: calc(100% + 40px);
            background: #f44336;
            top: -40px;
            z-index: 10;
            cursor: grab;
        }

        .current-time-indicator:active {
            cursor: grabbing;
        }

        .current-time-indicator::before {
            content: '';
            position: absolute;
            top: 0;
            left: -5px;
            width: 13px;
            height: 13px;
            background: #f44336;
            border-radius: 50%;
            border: 2px solid white;
            box-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }

        .indicator-time-label {
            position: absolute;
            top: -35px;
            left: 50%;
            transform: translateX(-50%);
            background: #f44336;
            color: white;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 600;
            white-space: nowrap;
            pointer-events: none;
        }

        .volume-labels {
            display: flex;
            justify-content: space-between;
            margin-top: 10px;
            font-size: 11px;
            color: #666;
        }

        .volume-y-axis {
            position: absolute;
            left: -50px;
            top: 0;
            bottom: 0;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            font-size: 10px;
            color: #999;
            text-align: right;
            width: 45px;
        }

        .volume-grid {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            pointer-events: none;
        }

        .volume-grid-line {
            border-top: 1px dashed #e0e0e0;
            width: 100%;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 1.8em;
            }

            .time-display {
                font-size: 1.5em;
            }

            .session-info {
                flex-direction: column;
                align-items: flex-start;
                justify-content: center;
                gap: 5px;
            }

            .status-badge {
                margin-left: 0;
            }
        }