/* ==================== CSS Variables ==================== */
/* AIDEV-NOTE: Theme variables for metric cards - easy customization */

:root {
    /* Card colors */
    --metric-card-bg: #ffffff;
    --metric-card-border: #e2e8f0;
    --metric-card-shadow: 0 1px 3px rgba(0,0,0,0.1);
    --metric-card-hover-shadow: 0 4px 6px rgba(0,0,0,0.1);

    /* Value colors */
    --metric-value-color: #2d3748;
    --metric-value-success: #48bb78;
    --metric-value-warning: #ed8936;
    --metric-value-danger: #e53e3e;
    --metric-value-info: #4299e1;

    /* Text colors */
    --metric-title-color: #2d3748;
    --metric-subtitle-color: #718096;

    /* Progress bar */
    --metric-progress-bg: #e2e8f0;
    --metric-progress-fill: #48bb78;
    --metric-progress-height: 4px;

    /* Ranking badge */
    --metric-ranking-bg: #f7fafc;
    --metric-ranking-color: #2d3748;
    --metric-ranking-border: #e2e8f0;

    /* Sizes */
    --metric-card-padding: 20px;
    --metric-card-border-radius: 8px;
    --metric-icon-size: 18px;
    --metric-value-size: 32px;
    --metric-title-size: 14px;
    --metric-subtitle-size: 12px;
}

/* ==================== Metric Card Base ==================== */
/* AIDEV-NOTE: Reusable metric card component with progress bars, rankings, trends */

.metric-card {
    background: var(--metric-card-bg);
    border: 1px solid var(--metric-card-border);
    border-radius: var(--metric-card-border-radius);
    padding: var(--metric-card-padding);
    box-shadow: var(--metric-card-shadow);
    display: flex;
    flex-direction: column;
    position: relative;
    min-height: 180px;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.metric-card.clickable {
    cursor: pointer;
}

.metric-card.clickable:hover {
    box-shadow: var(--metric-card-hover-shadow);
    transform: translateY(-2px);
}

/* ==================== Card Components ==================== */

/* Badge (top-right corner) */
.metric-card__badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--metric-ranking-bg);
    color: var(--metric-ranking-color);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Header: Icon + Title */
.metric-card__header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.metric-card__icon {
    font-size: var(--metric-icon-size);
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.metric-card__title {
    margin: 0;
    font-size: var(--metric-title-size);
    font-weight: 600;
    color: var(--metric-title-color);
    line-height: 1.4;
}

/* Value */
.metric-card__value {
    font-size: var(--metric-value-size);
    font-weight: bold;
    color: var(--metric-value-color);
    margin-bottom: 8px;
    line-height: 1.2;
    /* AIDEV-NOTE: Value color is set inline based on thresholds */
}

/* Empty State */
.metric-card__empty {
    font-size: var(--metric-value-size);
    font-weight: bold;
    color: var(--metric-subtitle-color);
    margin-bottom: 8px;
    line-height: 1.2;
    opacity: 0.5;
}

/* Progress Bar */
.metric-card__progress {
    background: var(--metric-progress-bg);
    height: var(--metric-progress-height);
    border-radius: calc(var(--metric-progress-height) / 2);
    overflow: hidden;
    margin-bottom: 8px;
    position: relative;
}

.metric-card__progress-fill {
    height: 100%;
    background: var(--metric-progress-fill);
    border-radius: calc(var(--metric-progress-height) / 2);
    transition: width 0.3s ease;
    /* AIDEV-NOTE: Width and background color set inline */
}

/* Ranking Badge */
.metric-card__ranking {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--metric-ranking-bg);
    color: var(--metric-ranking-color);
    border: 1px solid var(--metric-ranking-border);
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
}

/* Trend Indicator */
.metric-card__trend {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 600;
    /* AIDEV-NOTE: Color is set inline based on direction */
}

.metric-card__trend .trend-arrow {
    font-size: 14px;
    line-height: 1;
}

.metric-card__trend .trend-value {
    line-height: 1;
}

/* Subtitle */
.metric-card__subtitle {
    font-size: var(--metric-subtitle-size);
    color: var(--metric-subtitle-color);
    line-height: 1.4;
    margin-top: auto; /* Push to bottom */
}

/* ==================== Multiple Cards Layout ==================== */

.metrics-cards-row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.metrics-cards-row > * {
    flex: 1;
    min-width: 200px;
}

/* ==================== Animations ==================== */

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.metric-card {
    animation: cardFadeIn 0.3s ease;
}

/* ==================== Responsive Breakpoints ==================== */

@media (max-width: 768px) {
    :root {
        --metric-card-padding: 16px;
        --metric-value-size: 28px;
        --metric-title-size: 13px;
    }

    .metric-card {
        min-height: 160px;
    }

    .metrics-cards-row {
        gap: 16px;
    }

    .metrics-cards-row > * {
        min-width: calc(50% - 8px);
    }
}

@media (max-width: 480px) {
    :root {
        --metric-card-padding: 12px;
        --metric-value-size: 24px;
        --metric-title-size: 12px;
        --metric-subtitle-size: 11px;
    }

    .metric-card {
        min-height: 140px;
    }

    .metrics-cards-row {
        gap: 12px;
        flex-direction: column;
    }

    .metrics-cards-row > * {
        min-width: 100%;
        flex: 1 1 100%;
    }

    .metric-card__badge {
        font-size: 9px;
        padding: 3px 6px;
    }

    .metric-card__ranking {
        padding: 4px 8px;
        font-size: 11px;
    }
}

/* ==================== Utility Classes ==================== */

/* Card size variants */
.metric-card--small {
    --metric-card-padding: 12px;
    --metric-value-size: 24px;
    --metric-title-size: 12px;
    min-height: 120px;
}

.metric-card--large {
    --metric-card-padding: 24px;
    --metric-value-size: 40px;
    --metric-title-size: 16px;
    min-height: 220px;
}

/* Color variants */
.metric-card--success {
    border-color: var(--metric-value-success);
}

.metric-card--warning {
    border-color: var(--metric-value-warning);
}

.metric-card--danger {
    border-color: var(--metric-value-danger);
}

.metric-card--info {
    border-color: var(--metric-value-info);
}