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

body {
    font-family: "Montserrat", sans-serif;
    background: linear-gradient(135deg, #1db954, #191414);
    color: white;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

.header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    color: #1db954;
}

.upload-container {
    background: rgba(25, 20, 20, 0.9);
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    border: 2px dashed #1db954;
    margin: 40px auto;
    max-width: 600px;
    transition: all 0.3s ease;
}

.upload-container:hover {
    border-color: #1ed760;
    background: rgba(25, 20, 20, 0.95);
}

.upload-container.dragover {
    border-color: #1ed760;
    background: rgba(29, 185, 84, 0.1);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    color: #1db954;
}

.upload-text {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.upload-input {
    display: none;
}

.upload-button {
    background: #1db954;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 10px;
}

.upload-button:hover {
    background: #1ed760;
    transform: translateY(-2px);
}

.back-button {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid #1db954;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.back-button:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.processing {
    text-align: center;
    padding: 40px;
    display: none;
}

.processing-steps {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.processing-step {
    padding: 10px 20px;
    border-radius: 25px;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0.5;
}

.processing-step.active {
    background: #1db954;
    opacity: 1;
}

.processing-step.completed {
    background: #1ed760;
    opacity: 1;
}

.loading {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #1db954;
    animation: spin 1s ease-in-out infinite;
}

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

.stats-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    background: rgba(25, 20, 20, 0.9);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    border: 1px solid rgba(29, 185, 84, 0.3);
}

.stat-card h3 {
    color: #1db954;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.big-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #1ed760;
    margin-bottom: 5px;
}

.sub-stat {
    color: #ccc;
    font-size: 0.9rem;
    margin-top: 8px;
}

.time-period {
    text-align: center;
    margin-bottom: 30px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 20px;
}

.time-period select {
    background: rgba(25, 20, 20, 0.9);
    color: white;
    border: 1px solid #1db954;
    padding: 10px 15px;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
}

.time-period label {
    color: white;
    font-weight: bold;
    margin-right: 8px;
}

.decimal-precision-btn {
    background: rgba(25, 20, 20, 0.9);
    color: white;
    border: 1px solid #1db954;
    padding: 2px 8px;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.decimal-precision-btn:hover {
    background: rgba(29, 185, 84, 0.2);
    transform: translateY(-1px);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 10px;
}

.progress-fill {
    height: 100%;
    background: #1db954;
    transition: width 0.3s ease;
}

.content-section {
    margin-bottom: 80px;
    padding-top: 20px;
}

.content-section:last-child {
    margin-bottom: 40px;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.chart-container {
    background: rgba(25, 20, 20, 0.9);
    border-radius: 15px;
    padding: 25px;
    border: 1px solid rgba(29, 185, 84, 0.3);
    position: relative;
    min-height: 350px;
}

.chart-container.hourly-patterns {
    min-height: 200px;
    padding: 15px;
}

.chart-container.weekly-patterns {
    min-height: 600px;
    padding: 40px;
}

.chart-title {
    color: #1db954;
    margin-bottom: 20px;
    text-align: center;
    font-size: 1.2rem;
    font-weight: bold;
    /*text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);*/
    background: rgba(29, 185, 84, 0.1);
    padding: 10px;
    border-radius: 8px;
    border: 1px solid rgba(29, 185, 84, 0.3);
}

.chart-container canvas {
    max-width: 100% !important;
    max-height: 300px !important;
    width: auto !important;
    height: auto !important;
}

.chart-container.weekly-patterns canvas {
    max-height: 500px !important;
    height: 500px !important;
}

.top-lists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.top-list-container {
    background: rgba(25, 20, 20, 0.9);
    border-radius: 15px;
    padding: 25px;
    border: 1px solid rgba(29, 185, 84, 0.3);
}

.top-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.top-list-title {
    color: #1db954;
    font-size: 1.2rem;
    font-weight: bold;
    /*text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);*/
}

.search-box {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(29, 185, 84, 0.5);
    border-radius: 20px;
    padding: 8px 15px;
    color: white;
    font-size: 0.9rem;
    width: 150px;
}

.search-box::placeholder {
    color: #ccc;
}

.top-list {
    max-height: 400px;
    overflow-y: auto;
    list-style: none;
}

.top-list::-webkit-scrollbar {
    width: 6px;
}

.top-list::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.top-list::-webkit-scrollbar-thumb {
    background: #1db954;
    border-radius: 3px;
}

.top-list li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 15px;
}

.rank {
    background: #1db954;
    color: white;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
    flex-shrink: 0;
}

.list-item-content {
    flex: 1;
}

.list-item-name {
    font-weight: bold;
    margin-bottom: 2px;
}

.list-item-stats {
    color: #ccc;
    font-size: 0.8rem;
}

.show-more-btn {
    background: rgba(29, 185, 84, 0.2);
    border: 1px solid #1db954;
    color: #1db954;
    padding: 8px 16px;
    border-radius: 15px;
    cursor: pointer;
    margin-top: 15px;
    font-size: 0.9rem;
    width: 100%;
}

.decimal-precision-btn {
    background: rgba(29, 185, 84, 0.2);
    border: 1px solid #1db954;
    color: #1db954;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.3s ease;
}

.decimal-precision-btn:hover {
    background: rgba(29, 185, 84, 0.3);
}

.toggle-buttons {
    display: flex;
    gap: 5px;
}

.toggle-buttons button {
    margin: 0 !important;
}

.error {
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid red;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    text-align: center;
    color: #ff6b6b;
    display: none;
}

.file-info {
    background: rgba(25, 20, 20, 0.9);
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    border: 1px solid rgba(29, 185, 84, 0.3);
    cursor: pointer;
    display: none;
    max-width: 100%;
    word-wrap: break-word;
}

.file-info ol {
    padding-left: 20px;
    line-height: 1.6;
    text-align: left;
}

.file-info li {
    margin-bottom: 8px;
    word-wrap: break-word;
    overflow-wrap: break-word;
    text-align: left;
}

.file-info a {
    word-break: break-all;
}

.file-info h4 {
    color: #1db954;
    margin-bottom: 10px;
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.insight-card {
    background: rgba(25, 20, 20, 0.9);
    border-radius: 15px;
    padding: 20px;
    border: 1px solid rgba(29, 185, 84, 0.3);
}

.insight-content {
    background: rgba(25, 20, 20, 0.3);
    border-radius: 15px;
    padding: 20px;
    margin-top: 20px;
}

.insight-title {
    color: #1db954;
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.insight-value {
    font-size: 1.8rem;
    font-weight: bold;
    color: #1ed760;
    margin-bottom: 5px;
}

.insight-detail {
    color: #ccc;
    font-size: 0.9rem;
}

.heatmap {
    display: grid;
    grid-template-columns: repeat(24, 1fr);
    gap: 2px;
    margin: 15px 0;
}

.heatmap-cell {
    aspect-ratio: 1;
    border-radius: 2px;
    transition: transform 0.2s ease;
}

.heatmap-cell:hover {
    transform: scale(1.2);
}

.heatmap-legend {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    font-size: 0.8rem;
    color: #ccc;
}

/* Custom tooltip styles */
.custom-tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    pointer-events: none;
    z-index: 1000;
    border: 1px solid #1db954;
    /*box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);*/
    opacity: 0;
    transform: translateY(-5px);
    transition:
        opacity 0.1s ease,
        transform 0.1s ease;
}

.custom-tooltip.show {
    opacity: 1;
    transform: translateY(0);
}

/* Platform usage list styles */
.platform-list {
    height: 100%;
    overflow-y: auto;
    background: rgba(15, 15, 15, 0.5);
    border-radius: 8px;
    padding: 10px;
}

.platform-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(29, 185, 84, 0.1);
    color: white;
}

.platform-item:last-child {
    border-bottom: none;
}

.platform-name {
    font-weight: 500;
    color: #1db954;
}

.platform-hours {
    color: #ccc;
    font-size: 0.9rem;
}

.platform-list::-webkit-scrollbar {
    width: 8px;
}

.platform-list::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

.platform-list::-webkit-scrollbar-thumb {
    background: #1db954;
    border-radius: 4px;
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .stats-overview {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .stat-card {
        padding: 15px;
    }

    .upload-container {
        padding: 20px;
    }

    .charts-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .chart-container {
        padding: 15px;
        min-height: 250px;
        overflow: hidden;
    }

    .chart-container canvas {
        max-width: 100% !important;
        max-height: 250px !important;
        width: 100% !important;
        height: auto !important;
    }

    /* Make TikTok embed responsive on mobile */
    .tiktok-embed {
        min-width: 0 !important;
        max-width: 100% !important;
        width: 100% !important;
    }

    .chart-container.weekly-patterns {
        min-height: 300px;
        padding: 15px;
    }

    .chart-container.weekly-patterns canvas {
        max-height: 250px !important;
        height: auto !important;
    }

    .chart-container.hourly-patterns {
        min-height: 200px;
        padding: 10px;
    }

    .chart-title {
        font-size: 1rem;
        margin-bottom: 15px;
        flex-direction: column;
        gap: 10px;
    }

    .chart-title > div {
        display: flex;
        gap: 5px;
        justify-content: center;
        flex-wrap: wrap;
    }

    .chart-title button {
        padding: 3px 12px !important;
        font-size: 0.8rem !important;
        margin: 0 !important;
    }

    .top-lists-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .top-list-container {
        padding: 15px;
    }

    .top-list-header {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }

    .top-list-title {
        text-align: center;
        margin-bottom: 0;
    }

    .search-box {
        margin-bottom: 0;
        width: 100%;
    }

    .platform-list {
        height: 80px;
    }

    /* Platform chart mobile layout */
    .chart-container .platform-chart-container {
        flex-direction: column;
        gap: 10px;
    }

    .chart-container .platform-chart-container > div:first-child {
        height: 200px !important;
    }

    .chart-container .platform-chart-container > div:last-child {
        height: 100px !important;
    }

    .insights-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
    }

    .insight-card {
        padding: 15px;
    }

    .insight-title {
        font-size: 0.9rem;
    }

    .insight-value {
        font-size: 1.3rem;
    }

    .heatmap {
        padding: 10px;
        overflow-x: auto;
        grid-template-columns: repeat(24, minmax(12px, 1fr));
        gap: 1px;
        min-width: 300px;
    }

    .heatmap-cell {
        min-width: 12px;
        min-height: 12px;
    }

    .heatmap-legend {
        font-size: 0.8rem;
        padding: 0 10px;
    }

    .time-period {
        gap: 15px;
        flex-direction: column;
        align-items: stretch;
        padding: 15px;
        background: rgba(25, 20, 20, 0.5);
        border-radius: 10px;
        margin-bottom: 20px;
    }

    .time-period > div {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-wrap: nowrap;
        justify-content: space-between;
    }

    .time-period label {
        margin-left: 0 !important;
        margin-right: 8px !important;
        white-space: nowrap;
        font-size: 0.9rem;
        min-width: 80px;
        color: #1db954;
        font-weight: bold;
    }

    .time-period select {
        padding: 8px 12px;
        font-size: 0.9rem;
        flex: 1;
        min-width: 120px;
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid #1db954;
        border-radius: 5px;
        color: white;
    }

    .decimal-precision-btn {
        padding: 4px 10px;
        font-size: 1rem;
    }

    .content-section h2 {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }

    .content-section {
        margin-bottom: 60px;
        padding-top: 10px;
    }

    .show-more-btn {
        font-size: 0.9rem;
        padding: 8px 16px;
    }

    /* Toggle button sections mobile */
    .toggle-section {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
        margin-bottom: 15px;
    }

    .toggle-section span {
        text-align: center;
        margin-bottom: 5px;
    }

    .toggle-buttons {
        display: flex;
        gap: 8px;
        justify-content: center;
        flex-wrap: wrap;
    }

    .toggle-buttons button {
        flex: 1;
        min-width: 100px;
        padding: 8px 12px !important;
        font-size: 0.85rem !important;
        margin: 0 !important;
    }
}

.hidden {
    display: none !important;
}