:root {
    --bg-dark: #0f0f23;
    --text-light: #ffffff;
    --accent-neon: #00ffcc;
    --revenue-red: #ff4d4d;
    --gradient-start: #ff7e5f;
    --gradient-end: #feb47b;
    --card-bg: #1a1a3a;
    --card-border: rgba(0, 255, 204, 0.3);
}

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

.youtube-analytics-tool {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

.search-section {
    text-align: center;
    padding: 30px 20px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 12px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(255, 126, 95, 0.3);
}

.search-section h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.8rem;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.search-section p {
    font-size: 1.1rem;
    margin-bottom: 25px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.search-box {
    display: flex;
    max-width: 700px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.search-box input {
    flex: 1;
    padding: 15px 25px;
    border: none;
    outline: none;
    font-size: 1rem;
    background: transparent;
}

.search-btn {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 15px 30px;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.search-btn:hover {
    background: #3e8e41;
}

.analytics-section {
    display: none;
    margin-top: 30px;
}

.channel-header {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--card-border);
}

.channel-thumbnail {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 20px;
    border: 2px solid var(--accent-neon);
}

.channel-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.channel-info h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 5px;
    color: var(--accent-neon);
}

.channel-info p {
    font-size: 0.9rem;
    opacity: 0.8;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.metric-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.metric-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 255, 204, 0.2);
}

.metric-title {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-bottom: 8px;
}

.metric-value {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--accent-neon);
    font-family: 'Orbitron', sans-serif;
}

.revenue-card {
    background: linear-gradient(135deg, #ff4d4d, #ff3333);
    grid-column: 1 / -1;
    text-align: center;
    padding: 30px;
}

.revenue-card .metric-value {
    font-size: 2.5rem;
    color: white;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.chart-container {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.chart-title {
    text-align: center;
    font-family: 'Orbitron', sans-serif;
    color: var(--bg-dark);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.loading {
    display: none;
    text-align: center;
    padding: 30px;
}

.loading-spinner {
    border: 5px solid rgba(0, 255, 204, 0.3);
    border-top: 5px solid var(--accent-neon);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.error-message {
    display: none;
    text-align: center;
    color: var(--revenue-red);
    padding: 20px;
    background: rgba(255, 77, 77, 0.1);
    border-radius: 8px;
    margin: 20px 0;
}

@media (max-width: 768px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .search-box {
        flex-direction: column;
        border-radius: 12px;
    }
    
    .search-btn {
        border-radius: 0 0 12px 12px;
    }
    
    .channel-header {
        flex-direction: column;
        text-align: center;
    }
    
    .channel-thumbnail {
        margin-right: 0;
        margin-bottom: 15px;
    }
}