/* =========================================================================
   UNIVERSAL DESIGN SYSTEM - CARDS
   =========================================================================
   STRICT RULE: One card system. Use modifiers for variants.
   ========================================================================= */

.tool-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-fast);
}

/* Hover Effect */
.tool-card:hover {
    background-color: var(--bg-card-hover);
    box-shadow: var(--shadow-md);
}

/* -----------------------------------------
   CARD VARIANTS
----------------------------------------- */

/* Glass Variant */
.tool-card--glass {
    background-color: rgba(13, 31, 28, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* Outlined Variant */
.tool-card--outlined {
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.15);
}

/* Status Variants */
.tool-card--success {
    border-color: rgba(74, 222, 128, 0.3);
    background-color: rgba(74, 222, 128, 0.02);
}

.tool-card--warning {
    border-color: rgba(245, 158, 11, 0.3);
    background-color: rgba(245, 158, 11, 0.02);
}

.tool-card--danger {
    border-color: rgba(239, 68, 68, 0.3);
    background-color: rgba(239, 68, 68, 0.02);
}

/* -----------------------------------------
   CARD COMPONENTS (Headers, Footers)
----------------------------------------- */
.tool-card-header {
    margin-bottom: var(--space-4);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tool-card-heading {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: var(--line-height-tight);
}

.tool-card-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.tool-card-footer {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}