.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.55rem 1.125rem;
    font-size: var(--font-size-sm);
    font-weight: 600;
    line-height: 1.5;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    letter-spacing: 0.01em;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0);
    transition: background 0.2s ease;
}

.btn:hover::after {
    background: rgba(255,255,255,0.12);
}

.btn:active::after {
    background: rgba(255,255,255,0.2);
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
    transform: translateY(-1px);
    color: #fff;
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(37, 99, 235, 0.3);
}

.btn-large {
    padding: 0.75rem 2rem;
    font-size: var(--font-size-base);
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.btn-large:hover {
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
    transform: translateY(-1px);
    color: #fff;
}

.btn-block {
    width: 100%;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.625rem 0.75rem;
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    margin-bottom: 1rem;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: box-shadow var(--transition);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    font-size: var(--font-size-lg);
}

.feature-card p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.stat-card h3 {
    margin-bottom: 0.5rem;
    font-size: var(--font-size-lg);
}

.stat-card p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: var(--font-size-sm);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
}

.btn-sm:hover {
    background: var(--color-border);
    border-color: #cbd5e1;
}

.btn-danger {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    color: #fff;
    box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
}

.btn-danger:hover {
    box-shadow: 0 4px 14px rgba(220, 38, 38, 0.4);
    transform: translateY(-1px);
    color: #fff;
}

.btn-danger:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(220, 38, 38, 0.3);
}

.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.table th,
.table td {
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: var(--font-size-sm);
    border-bottom: 1px solid var(--color-border);
}

.table th {
    font-weight: 600;
    background: var(--color-bg);
    color: var(--color-text);
    white-space: nowrap;
}

.table tbody tr:hover {
    background: #f8fafc;
}

.table .actions {
    display: flex;
    gap: 0.5rem;
    white-space: nowrap;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.page-header h1 {
    font-size: var(--font-size-2xl);
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    background: var(--color-surface);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
}

.empty-state p {
    color: var(--color-text-light);
    margin-bottom: 1rem;
    font-size: var(--font-size-base);
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    padding: 0.75rem 1rem;
    font-size: var(--font-size-sm);
    font-weight: 600;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.card-body {
    padding: 1rem;
}

.required {
    color: var(--color-error);
}

.text-sm {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.mono {
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
}

.text-danger {
    color: var(--color-error);
    font-weight: 600;
}

.checkbox-label {
    display: flex !important;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.input-margem {
    background: var(--color-bg) !important;
    font-weight: 600;
    color: var(--color-primary) !important;
    cursor: default;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }
}

.produtos-search {
    margin-bottom: 1rem;
}

.search-form {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 200px;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}