/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.5rem 1rem;
    min-height: 2.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.875rem;
    transition: var(--transition);
    border: 1px solid transparent;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: white;
    border-color: var(--border);
    color: var(--text);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg);
    border-color: var(--text-muted);
}

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

.btn-ghost:hover:not(:disabled) {
    background-color: var(--bg);
    color: var(--text);
}

.btn-danger {
    background-color: #FEE2E2;
    color: var(--danger);
}

.btn-danger:hover:not(:disabled) {
    background-color: #FECACA;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    min-height: 2rem;
    font-size: 0.75rem;
}

/* Cards */
.card {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--divider);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.card-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--secondary);
    min-width: 0;
}

.card-body {
    padding: var(--space-md);
    flex: 1;
}

/* Inputs */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
}

.form-control {
    width: 100%;
    padding: 0.625rem;
    min-height: 2.625rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.875rem;
    transition: var(--transition);
}

textarea.form-control {
    min-height: 8rem;
    resize: vertical;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-control.is-invalid {
    border-color: #DC2626;
    background-color: #FEF2F2;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.14);
}

.form-control.is-invalid:focus {
    border-color: #DC2626;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.18);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background-color: #D1FAE5;
    color: #065F46;
}

.badge-warning {
    background-color: #FEF3C7;
    color: #92400E;
}

.badge-danger {
    background-color: #FEE2E2;
    color: #991B1B;
}

.badge-info {
    background-color: #DBEAFE;
    color: #1E40AF;
}

.badge-neutral {
    background-color: #F1F5F9;
    color: #475569;
}

/* Tables */
.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    background-color: var(--surface);
}

.data-table th,
.data-table td {
    padding: var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--divider);
    vertical-align: top;
}

.data-table th {
    background-color: var(--bg);
    font-weight: 600;
    color: var(--text-muted);
}

.data-table tr:last-child td {
    border-bottom: none;
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-xl);
    color: var(--text-muted);
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    color: var(--border);
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary);
    min-width: min(300px, calc(100vw - 2rem));
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}