/**
 * Reusable UI components (ds-* prefix)
 */

.ds-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1rem 1.25rem;
}

.ds-card--elevated {
    box-shadow: var(--shadow-md);
}

.ds-card__header {
    margin-bottom: 0.75rem;
}

.ds-card__title {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.ds-page-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.ds-page-header__title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
}

.ds-page-header__subtitle {
    margin: 0.25rem 0 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.ds-page-header__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.ds-stat-card {
    background: var(--surface);
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 1.15rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-height: 96px;
}

.ds-stat-card__label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: none;
    letter-spacing: 0;
}

.ds-stat-card__value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
}

.ds-stat-card__meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.ds-stat-card__icon {
    width: 3rem;
    height: 3rem;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--primary) 12%, var(--surface));
    color: var(--primary);
    margin-bottom: 0;
}

.ds-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1.4;
    border: 1px solid transparent;
}

.ds-badge--success {
    background: color-mix(in srgb, var(--success) 15%, transparent);
    color: var(--success);
    border-color: color-mix(in srgb, var(--success) 25%, transparent);
}

.ds-badge--warning {
    background: color-mix(in srgb, var(--warning) 18%, transparent);
    color: #b45309;
    border-color: color-mix(in srgb, var(--warning) 30%, transparent);
}

.ds-badge--danger {
    background: color-mix(in srgb, var(--danger) 14%, transparent);
    color: var(--danger);
    border-color: color-mix(in srgb, var(--danger) 25%, transparent);
}

.ds-badge--info {
    background: color-mix(in srgb, var(--info) 14%, transparent);
    color: var(--info);
    border-color: color-mix(in srgb, var(--info) 25%, transparent);
}

.ds-badge--muted {
    background: var(--surface-secondary);
    color: var(--text-secondary);
    border-color: var(--border);
}

.ds-empty-state {
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: var(--surface);
    border: 1px dashed var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
}

.ds-empty-state__title {
    margin: 0.75rem 0 0.35rem;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
}

.ds-empty-state__desc {
    margin: 0 auto;
    max-width: 28rem;
    font-size: 0.875rem;
}

.ds-empty-state__actions {
    margin-top: 1rem;
}

.ds-filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: flex-end;
    padding: 1rem;
    margin-bottom: 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.ds-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.45rem 0.9rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-size: 0.875rem;
    font-weight: 550;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
    text-decoration: none;
    line-height: 1.25;
}

.ds-btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.ds-btn--primary {
    background: var(--primary);
    color: var(--text-on-primary);
}

.ds-btn--primary:hover {
    background: var(--primary-hover);
    color: var(--text-on-primary);
}

.ds-btn--outline {
    background: var(--surface);
    border-color: var(--border);
    color: var(--text-primary);
}

.ds-btn--outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.ds-btn--ghost {
    background: transparent;
    color: var(--text-secondary);
}

.ds-btn--ghost:hover {
    background: var(--surface-secondary);
    color: var(--text-primary);
}

.ds-btn--icon {
    padding: 0.4rem;
    width: 2.15rem;
    height: 2.15rem;
}

.ds-alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--surface-secondary);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.ds-alert--success {
    background: color-mix(in srgb, var(--success) 10%, var(--surface));
    border-color: color-mix(in srgb, var(--success) 30%, var(--border));
}

.ds-alert--danger {
    background: color-mix(in srgb, var(--danger) 10%, var(--surface));
    border-color: color-mix(in srgb, var(--danger) 30%, var(--border));
}

.ds-skeleton {
    background: linear-gradient(
        90deg,
        var(--surface-secondary) 25%,
        color-mix(in srgb, var(--border) 60%, var(--surface)) 50%,
        var(--surface-secondary) 75%
    );
    background-size: 200% 100%;
    animation: ds-skeleton 1.2s ease-in-out infinite;
    border-radius: var(--radius-sm);
    min-height: 1rem;
}

@keyframes ds-skeleton {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.ds-loader {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: ds-spin 0.7s linear infinite;
    display: inline-block;
}

@keyframes ds-spin {
    to {
        transform: rotate(360deg);
    }
}