:root {
    --bg-dark: #0f111a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent-color: #f05033; /* Git/Linux inspired orange-red */
    --accent-hover: #ff6b4a;
    --accent-glow: rgba(240, 80, 51, 0.2);
    --success-color: #10b981;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    background-image:
        radial-gradient(circle at 15% 50%, rgba(240, 80, 51, 0.08), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(56, 189, 248, 0.05), transparent 25%);
}

.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 1.5rem 4rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
    animation: fadeInDown 0.8s ease-out;
}

h1 {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #fff 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1.5rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.25rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s ease;
    animation: fadeInUp 0.8s ease-out backwards;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2), 0 0 12px var(--accent-glow);
    border-color: rgba(255, 255, 255, 0.15);
}

/* Specific Grid Alignments */
.stat-card {
    grid-column: span 6;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-title i {
    color: var(--accent-color);
}

.chart-container {
    position: relative;
    width: 100%;
    height: 290px;
}

.embed-container {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.embed-container iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-color);
    line-height: 1;
    margin-bottom: 1rem;
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.stat-value span {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-trend {
    display: inline-flex;
    align-items: center;
    align-self: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    margin-left: 0.25rem;
}

.source-link {
    display: block;
    text-align: right;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    margin-top: 1rem;
    transition: color 0.2s;
}

.source-link:hover {
    color: var(--accent-hover);
}

/* Loading State */
.loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s ease-in-out infinite;
}

/* Animations */
@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Tooltip */
.tooltip-container {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: help;
    margin-left: 0.5rem;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.tooltip-container:hover {
    color: var(--text-primary);
}

.tooltip-text {
    visibility: hidden;
    width: 260px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    text-align: left;
    border-radius: 8px;
    padding: 0.75rem;
    position: absolute;
    z-index: 10;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    font-size: 0.75rem;
    font-weight: normal;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--border-color) transparent transparent transparent;
}

.tooltip-container:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Responsive Design */
@media (max-width: 960px) {
    .stat-card {
        grid-column: span 12;
    }

    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 1.75rem;
    }

    .card {
        padding: 1rem;
    }

    .chart-container {
        height: 200px;
    }
}