.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
    background-color: transparent;
    text-decoration: none;
    box-shadow: var(--light-shadow);
}

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

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

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

.btn-secondary:hover {
    background-color: var(--color-secondary-light);
}

.btn-sm {
    font-size: 0.875rem;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
}

/* Optionnel : désactivation */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
}

.modal-close,
.upload-photo-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    color: var(--text-color);
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
}

.modal-close:hover,
.upload-photo-modal-close:hover {
    color: var(--color-danger);
}