/* ============================================
   WREN DESIGN SYSTEM - CARDS
   Mobile-first card components
   ============================================ */

/* ========================================
   BASE CARD
   ======================================== */

.card {
    background: var(--white);
    border: var(--border-width) solid var(--gray-200);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition);
}

.card-bordered {
    border-color: var(--black);
}

.card-shadow {
    box-shadow: var(--shadow-sm);
}

.card-hover:hover {
    border-color: var(--wren-terracotta);
    box-shadow: var(--shadow-md);
    transform: translateY(var(--hover-lift));
}

/* ========================================
   CARD PARTS
   ======================================== */

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--card-padding);
    border-bottom: var(--border-width) solid var(--gray-200);
    gap: var(--space-4);
}

.card-header-bordered {
    border-bottom-color: var(--black);
}

.card-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 800;
    color: var(--black);
    margin: 0;
    letter-spacing: -0.01em;
}

.card-subtitle {
    font-size: var(--text-sm);
    color: var(--gray-600);
    margin-top: var(--space-1);
}

.card-content,
.card-body {
    padding: var(--card-padding);
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: var(--card-padding);
    border-top: var(--border-width) solid var(--gray-200);
    gap: var(--space-3);
}

.card-footer-bordered {
    border-top-color: var(--black);
}

.card-footer-start {
    justify-content: flex-start;
}

.card-footer-between {
    justify-content: space-between;
}

/* ========================================
   CARD SIZES
   ======================================== */

.card-sm .card-header,
.card-sm .card-content,
.card-sm .card-body,
.card-sm .card-footer {
    padding: var(--card-padding-sm);
}

.card-sm .card-title {
    font-size: var(--text-lg);
}

.card-lg .card-header,
.card-lg .card-content,
.card-lg .card-body,
.card-lg .card-footer {
    padding: var(--card-padding-lg);
}

.card-lg .card-title {
    font-size: var(--text-2xl);
}

/* ========================================
   CARD WITH ICON
   ======================================== */

.card-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: 24px;
    flex-shrink: 0;
}

.card-icon-terracotta {
    background: var(--wren-terracotta-light);
    color: var(--wren-terracotta);
}

.card-icon-success {
    background: var(--success-light);
    color: var(--success);
}

.card-icon-error {
    background: var(--error-light);
    color: var(--error);
}

.card-icon-warning {
    background: var(--warning-light);
    color: var(--warning);
}

.card-icon-info {
    background: var(--info-light);
    color: var(--info);
}

/* ========================================
   FEATURE CARD
   ======================================== */

.feature-card {
    background: var(--white);
    border: var(--border-width) solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--card-padding);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.feature-card:hover {
    border-color: var(--wren-terracotta);
    box-shadow: var(--shadow-md);
    transform: translateY(var(--hover-lift));
}

.feature-card-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--wren-terracotta-light);
    border-radius: var(--radius-lg);
    font-size: 24px;
    color: var(--wren-terracotta);
    flex-shrink: 0;
    transition: all var(--transition);
}

.feature-card:hover .feature-card-icon {
    background: var(--wren-terracotta);
    color: var(--white);
}

.feature-card-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--black);
    margin: 0;
}

.feature-card-description {
    font-size: var(--text-sm);
    color: var(--gray-600);
    line-height: 1.6;
    margin: 0;
}

/* ========================================
   STATS CARD
   ======================================== */

.stats-card {
    background: var(--white);
    border: var(--border-width) solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--card-padding);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.stats-card-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stats-card-value {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--black);
    line-height: 1;
    letter-spacing: -0.02em;
}

.stats-card-change {
    font-size: var(--text-sm);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.stats-card-change.positive {
    color: var(--success);
}

.stats-card-change.negative {
    color: var(--error);
}

/* ========================================
   SETTINGS CARD (for settings pages)
   ======================================== */

.settings-card {
    background: var(--white);
    border: var(--border-width) solid var(--black);
    border-radius: var(--radius-xl);
    padding: var(--card-padding-lg);
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-sm);
}

.settings-section-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 800;
    color: var(--black);
    margin: 0 0 var(--space-6) 0;
    padding-bottom: var(--space-4);
    border-bottom: var(--border-width) solid var(--gray-200);
    letter-spacing: -0.01em;
}

/* ========================================
   EMPTY STATE CARD
   ======================================== */

.empty-card {
    background: var(--gray-50);
    border: var(--border-width) dashed var(--gray-300);
    border-radius: var(--radius-xl);
    padding: var(--space-12);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: var(--space-4);
}

.empty-card-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    font-size: 28px;
    color: var(--gray-400);
}

.empty-card-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--gray-700);
    margin: 0;
}

.empty-card-description {
    font-size: var(--text-sm);
    color: var(--gray-500);
    line-height: 1.6;
    max-width: 320px;
    margin: 0;
}

/* ========================================
   MOBILE RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
    .card-header,
    .card-content,
    .card-body,
    .card-footer {
        padding: var(--card-padding);
    }

    .card-title {
        font-size: var(--text-lg);
    }

    .settings-card {
        padding: var(--card-padding);
        border-radius: var(--radius-lg);
    }

    .settings-section-title {
        font-size: var(--text-lg);
    }

    .feature-card {
        padding: var(--card-padding);
    }

    .feature-card-icon {
        width: var(--avatar-lg);
        height: var(--avatar-lg);
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .card-header,
    .card-content,
    .card-body,
    .card-footer {
        padding: var(--card-padding-sm);
    }

    .card-footer {
        flex-direction: column;
        gap: var(--space-2);
    }

    .card-footer .btn {
        width: 100%;
    }

    .settings-card {
        padding: var(--card-padding-sm);
    }

    .empty-card {
        padding: var(--card-padding-lg);
    }

    .empty-card-icon {
        width: var(--avatar-xl);
        height: var(--avatar-xl);
        font-size: 24px;
    }
}

/* ========================================
   CARD GRID
   ======================================== */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-6);
}

.card-grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.card-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.card-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .card-grid,
    .card-grid-2,
    .card-grid-3,
    .card-grid-4 {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .card-grid-3,
    .card-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}